My RE Classic 350 Signals Edition has 4200 miles. After a recent 2400 mile trip I elected to change the oil (as I do after all long trips). I was surprised to find metal chips in the oil (below the basket) and a significant amount of bearing material in the filter. I followed the factory recommend run in procedure and maintenance schedule. Just FYI for your channel watchers, keep a close eye on your oil. Still waiting to see what Royal Enfield is going to do. I'll follow up with there actions/findings.
Royal Enfield elected to do a compression test and check Valve clearance, both of which are fine. They've chosen not to inspect the rotating assembly, which is where all of the metal is coming from. I will just rebuild the lower unit myself, I don't want it to self destruct.
@@deanomachineo7281 This is slightly disappointing / concerning to hear, as 1 - I'm picking up RE Classic in a few weeks, and 2 - I've nothing but stellar reviews about their customer support / warranty
@@csc-photo I haven't lost faith in the product, the little motor still runs strong. RE produces 800,000 bikes a year, they're bound to have an occasional issue. Like all problems, you need to talk to the right people. I may attempt to contact RE directly through my attorney and see if that moves things along. I have two RE bikes and will likely purchase the Shotgun model when it arrives in the U.S.
Hi Stuart My wife owns a Classic 350 in Halcyon Green as her first motorcycle here in Melbourne, Australia. As a former Triumph Thruxton and current Kawasaki Z900rs owner I was initially sceptical of Royal Enfield based on what I've read online, but I've been blown away and pretty impressed with Royal Enfield! It's been an amazing bike for her to learn on, and now we've just done the DNA Stage 2 air filter upgrade as you have done and what a difference it's made! So much more responsiveness in the low end and the increase in performance has been extremely noticeable. Great little upgrade for this model, and it's actually noticeable which is great. I've ridden her bike a few times now and it's made such an impression on me that when the time comes for my next bike in a few years I will definitely have Royal Enfield at the top of the list. Hopdfully by that point we will have seen a Classic or Bullet 500 in a single cylinder configuration, or if not a 650 version or even an updated Interceptor 650. Great work on the channel, really enjoy hearing your views and opinions and look forward to seeing more Enfield and Triumph coverage 👍
I fitted the DNA filter and plate to my Hunter 350 today. Took her for a 60 mile run and the difference was immediately noticeable. The bike gets up to speed a good bit quicker and pulls up hills far better. Best £100 I have spent in a while 😊
Really great episode Stu, (I’ve been interested in air filter and air-box design since I was a performance engine apprentice back in the 1970s) and I found your explanation completely on the button. All the best and here’s to some decent weather soon hopefully! 👍🙏
With your speedo issue - an Aussie youtuber (Wazza) had the same issue. He pulled out the headlight to get to the speedo and unplugged it (speedo). Inside the plug was grease or Vaseline - he cleaned it all out of the connecting two plugs, dried it and wa-la......it works again.
Maybe worth it to fit shrink tube over these contacts in the headlight assembly if you remove the dielectric grease.. Shrink tube prevents moisture from entering the contacts and should prevent corrosion. Also wise to have nametags on the different connectors w/heatshrink so it is easier to find them again later on if the need for more maintenance arises.
Did the filter and free flow pipe, engine was running hot so also installed the fuelx lite, which sorted it. All three changes have improved flow and sound of the bike. A lot smoother, with raw sound which is louder.
I put a DNA plate on my Hunter 350 using the OEM filter. You can tell a difference, especially going into 5th gear. I think I will order a filter to complete the upgrade.
Hi guys I've tried every upgrade on the royal enfield classic now I'm back to stock. In my opinion the bike only benefit is the DNA filter which I have kept on and I think that's all you need .Thanks for a honest video be safe 🙏
Saw more difference with the cover plate change than the filter. Tried it both ways. The cover seems to be 80% of the improvement to me. Either way you feel the change in the seat of the pants!
Yeah this has been discussed in previous videos. Short term it feels great but paper filters are an exercise in diminishing returns. As it clogs those gains diminish until you're back to square one and then need to replace the filter. Performance filters dont clog unless they have been left too long between cleaning and are really overloaded. 50,000 miles +.
@@stuartfillingham Ageed. Used these type of filters on a couple of cars. Unfortunately it's hard to notice such a difference on a high horsepower car. You got me interested in this. Think I'll put the paper filter back in and see how long it takes to see a drop in effectiveness. I'm guessing, now this is really a guess, if you maintain the bike as you should, the filter will be changed before the drop is noticed. But with such an improvement, I could be very wrong. This could be a long term dollar and cents thing, depending on how much you ride. I'll let you know what happens......
@@stuartfillinghambut the paper filter as shown by testing of huge numbers of oil tests and others is better at filtering the air and thus less engine wear.
Never moded any bike before but I was pursuaded to just change the air filter cover on my Hunter 350 and was amazed at the difference it made. I was truly sceptical to do this so was only prepared to spend the minimum amount but Im so glad I did. I felt a good increase in power from the off and the engine sounded much more racious which felt odd at first as my Hunter always sounded a bit anemic to me. I dont understand what 'indiction' noise is but to me it just sounds like Ive upgraded my exhaust so all this for under 40 quid is amazing! Thanks guys!
I have done this mod on a Meteor 350 and agree about the improvement in torque. The original filter cover fits inside the air box aperture whilst the DNA cover plate sits on top. The diameter of the resulting inlet ports is increased by 10mm. Not sure of the maths but the increase in area is what makes such a difference. More fuel/air mixture going in equals a bigger bang producing increased torque. Torque is what gives you acceleration.
Something you have not commented on Stu is how cooler the engine now runs when you do these filter changes, esp with also a de cat pipe fitted, on the hottest days I can stop and hold a bare hand on the crankcase no probs, before in stock form, the engine was roasting, My Classic 350 has over 8500 miles and been set up like this since 2000 miles, Now, a lot of folk on FB pages etc said don’t waste your money on these mods I say have a ride on my bike alongside your stock bike or watch my films and watch the mid range power differences 😁👍
Hello Stuart, i'm from Argentina and i've heard that in our neighbour Brazil they are tunning the ECU to override the speed limit which is 120 km/h they managed to push the 350 up to 140 km/h (or so i've heard) , and some tuners start to sell it here in Arg. that ECU tunning.
Hey Uncle Stu if you've been having issues with the speedo getting stuck at 20MPH or higher here's the fix. I had the issue with speedo right around 800 miles the first time I took off the connector and cleaned it with electrical contact cleaner allowed it to dry then reconnected and the speedo was fixed, it reset and operated as normal. Well, so I thought but it did it again at 1600 miles and I was going to get a new one from RE BUT I wanted to know why this was happening, so I disconnected it again and when I inspected the male pins there was a tinge of green which of course is corrosion and we all know what happens when there is corrosion and electronics... electronics go wonkie... so this time I put a light coat of dielectric grease. So far at 3000 miles I have not had any issues. I don't know if you've seen this where on a warm day you get condensation behind the glass at the fuel gauge and at times in the lower portion of the speedo. So my conclusion is there is moisture getting to the contacts and corroding out the pins and the only way to fix this is to clean the contacts and add dielectric grease to the pins so they do not get any corrosion.
I had the same speedo problem. Once the first day I pick it up from dealer (was very hot). Then many months later when the summer was back. Did the cleaning of connectors. Happens again perhaps twice in the same month (but back to normal was quicker). That was in June. And never again since then, although we have had an hot summer.
@@terceladdict It will generally happen during the days when the sun heats up that speedo assembly... I think it's because the speedo is not sealed properly... also for those who have a repeated problem for this issue you can always remove the front head lamp assembly the way you normally do to get to the speedo assembly disconnect the connector turn the key to on and then off then reattach the connector turn the key on again and the speedo will reset itself.
@@RonConsumer Maybe worth it to fit shrink tube over these contacts in the headlight assembly. Shrink tube prevents moisture from entering the contacts and should prevent corrosion. Also wise to have nametags on the different connectors w/heatshrink so it is easier to find them again later on if the need for more maintenance arises.
Well, I just ordered a DNA high-performance air filter for my Triumph Speed Twin 1200, based on this video, as I have great faith in your recommendations, Stuart😊
When I was an engineering student, a friend and I did a tuning project on what at the time was my winter bike. The aim was to get as much power as we could without ruining the rideability. We chose a K&N filter which appears to have identical construction to the DNA item shown. I can testify that these work and work well with minimal maintenance. Of course this was not the only mod. The bike was a 2 stroke single and had head, barrel and exhaust mods too. I'd choose this type of filter again though which I guess is the acid test.
Put this DNA combo on my Meteor 350 and immediately noticed better low-mid range power and improved sound, especially revving through gears 3 and 4. Btw, the speedo issue seems quite common on the Classic 350. Others have been able to fix this by cleaning the contacts.
Interesting experiment. Here's a thought... If the ECU governs speed by checking the speed from the ABS sensor then the ECU must be programmed with the size of the front wheel. Since the hunter has a 17" front wheel the ECU must have a slightly different program that allows the front wheel to spin faster than the classic of meteor. So.. if you switched the ECU on the classic for a Hunter ECU the top speed would be limited to 75 x 19/17 = approximately 84mph indicated. Because the ECU thinks that the front wheel is smaller than it really is and needs to spin faster to reach an indicated 75. This of course assumes that the front disc and ABS ring are the same on both bikes. If the difference is in the ABS reader ring then perhaps that could be changed.
Thank You For All You Do! Have never sent a comment to any RUclips posts. Lifetime Brit Bike rider/racer/mechanic. Turned 300mi on my 350 RE Classic. First service took much longer than expected, but your video saw me thru. Am on wait list at Hitchcocks for a cam. added a Tach, hard bags, Harley windshield and a decat . (Kansas has no inspections) Cheers! PS: the valves were set extremely tight....004 intake, .14 exhaust, just a mention for your viewers thinking of skipping the first adjustment.
Completely agree, I fitted the stage 2 after the engine had run in and there was a noticeable improvement, next step is to fit a Hitchcocks decat pipe and see how that goes. As always an informative and interesting video. Thanks Stu.
Do it! We did just that on our Royal Enfield Classic 350 and love the combo! You'll be happy, and you get rid of that hideous cat on the center of the exhaust. The Hitchcock's is a nice piece and has all the gaskets... Ride Safe 🙏🏼
Stuart is right. Performance filters do not harm engines. I have had several. One of my current bike's low/midrange performance has been radically improved. If you own a KTM 390 Duke Mk2, fit a K&N filter and drill six holes in the airbox cover. No repapping necessary. Good video. 1990 [Nick J]
If you are talking about the 2017+ 390 Duke, those holes in the airbox cover need to be covered by some sort of filter material or you will draw too much dirt into the engine since you are effectively bypassing the air filter.
@@1990-t1j I would still recommend a review of the mod. Air is pulled into the airbox from the underside of the air filter. When you open the airbox cover, the side of the filter that you can see is the exit side. Air that enters the airbox through the holes in the cover will not pass through the filter. You might as well drill holes into the filter itself and the effect will be the same. It's unfiltered atmospheric air with all the dust it contains going straight into the throttle body. You won't see problems yet but expect the engine life to be cut a little short.
@@1990-t1j No idea why they would do that. I'm just telling you the facts. You can check out the KTM 390 forum online for this topic. Also, brands like Coober in the US make airbox lids for the 390 with an integrated filter for a reason.
Morning Stewart. Informative as always sir. One afternoon in 1982 my wife and I went into a small custom motorcycle shop in Watford just for the ride and a look see at what's new. Sammy called me over and said what's this? It was a sleek sexy looking well made chrome air box that fitted all Honda 750 Fours. So I bought it along with some filter sponge spray. But when I went to fit it, I really didn't like the very light sponge filter that came with it. So into the shed and I dug out our spair pond filter sponges. Using the sponge that came with the filter as a templet I cut, oiled and installed the slightly more thicker sponge, then we went for a ride. From the off throttle response to the back wheel was oh so noticeable. And the only adjustment needed to the carbs was as stated by the shop owner. 'You might find you'll need to lift you needles up one notch', he said. And he was right. You could hear how much better the bike was breathing and with the original black box removed our K7 looked less cluttered side on. Better days for sure 👌. Good luck with your warrenty claim and I hope it goes through okay. Safe cruising till next time Stewart 👍😊.
Certainly wont argue about anything you said. This filter made a truely noticeable difference in low down grunt ignoring the better induction noise. Left off the document case I worked out the cost of the DNA service kit which imho is enough for two treatments as long as you reseal the bottles against renewing the standard paper filter every service. But even if you use all the cleaner (oil? it says you dont need to use it all) Its cheap at around 15 quid for the big improvement gained .
I put the Hitchcocks open cover on my Meteor at around 1,000 miles in. I noticed a difference immediately and agree as you describe here. At the 2,000 mile mark I took the open filter cover off and put the original back in as I wanted to see if a looser engine would counter any gains from the open filter cover and I was surprised at the noticeable slower difference going back to the original. It didn't take me long to decide to swap them over again. If I was only allowed one modification on my Meteor, it would definitely be the open filter cover.
I have the air filter, decat pipe and fuel x lite on mine. Pulls better and handles raised gearing so relaxed cruising at 60-65mph rather than the 55-60 previously. Sounds nicer too - but not offensive.👍
I have a similar setup (DNA intake, cat delete full exhaust, and FuelX Pro). I just ordered a cam from Hitchcocks and still waiting on the 16 tooth front sprocket. 🍻
@jakeford2313 how's the bike running now? And could you also tell me if it requires oil change more frequently than before? Just curious to know, thanx in advance
We put these on three of our Royal Enfield Classic 350 and the Hitchcock's decat pipe. Together, it's a great change and feels/sounds better! Just makes it a little more rumbly and everyone loves the changes. Ride Safe 🙏🏼
Today I handed over my 2022 Classic 350 to a local bike shop so that they can replace the original "doggey" Speedo. I let you know how it goes (here in Australia) once I get the MC back.
Great video. The only criticism of my 350 was ‘if it only it could have a bit more power’ and this looks like a simple fix even Muggins here could do myself. I mainly commute and at times just a bit more power would be nice to have. Cheers
I just installed the DNA stage two kit on my Hunter 350. It has done much as you describe, even with the Hunter already having a sportier tuming. And the intake sound is a nice bonus😎
Yeah, after about 1,500 miles, the bike has become much more flexible with improved overall performance. Having watched both yours and a few other videos on the net, I installed one of these, they are quite expensive but, I am positive it was money well spent. Was surprised at the induction noise and yes, it is more eager than before, it lopes along with a freer character, won't bother with anymore upgrades because it doesn't need them, plus it wouldn't suit the bikes vintage type appeal. Thanks for the video
I got the DNA kit and changed the filter for my 2023 Classic 350. Positive changes were easy to hear, see and feel: the motor runs firmer with fantastic growling bass sound, bike accelerates better (with awsome sound) and even increases speed while climbing steep uphill on the fifth gear. That was not an easy task to do with the RE stock air filter. Fibes got a bit more stronger, but that is not an issue at all. MPG or in my case KMPL got a little worse according to the initial calculations. Old configuration meant 2,7 litres per 100 km where as the new one makes it 3 litres per 100 km. Not a big thing and the positive changes override it with no sweat. Highly recommend the air filter upgrade: it makes the great bike even greater!
After several bikerides and LPKM calculations it was a pleasant suprise to notice that fuel consumption has changed to a level of 2,5 litres per 100 km. Has the EFI got something to do with it by finding proper parameters?
Just ordered same bike in bronze/chrome, watching you ride yours and tinkering made me want one, and just ordered filter, don't get the bike till next week😂, keep up the good work, love the content
I made this mod to my Himalayan 10k miles ago. I’m able to accelerate up hills that previously speed could only be maintained on…the difference noticeable.
On the nose Stu , changed my meteor and it really does make a much better bike , as an observation I idled mine for 10 mins , don't know where that advice came from but glad i.did it . My meteor seems to.want to.go.more over 60 , it soon reaches 75 and bounces the limiter, I tried an old coach driver trick with the limiter, you let it hit the limit ease off and then nail it and no you can't break.through. Will.experiment with a steeper downhill , I won't hold my breath , but if it works I will report back . I will say though I don't really want to.Ride like a seventeen year old . Cheers Stu , good riding
Just thinking back to the days when we used to rip out the paper from filters and stuff them full of wire wool, Used Brillo pads were the preferred option. Don't advise anyone to do that though. Here in Australia (NSW) we have funny regs when it comes to licence renewal tests (MOT tests) might have to check out whether a DNA filter would pass the test not being E5 etc rated.
I'm an Aussie also living in NSW. I rekon the simplest way to pull the wool over any rego check place, would be to just temporarily re-install the OEM filter, when it's time to get a rego check. After the bike has been checked off, then re-install the DNA filter.
@@seanb1081 Thought the same thing. The orignal cover is stamped with E5 E11 etc so that might be what the checkers go by. What I might do though is check with my local rego garage and see if it would pass. If I find out anything I'll post it.
Done it to my meteor 350….. definitely recommend it, slightly louder and throttle response is better….. Also put an Emgo exhaust on it, now it breathes way better 👍
I installed a DNA filter and cover on the Meteor 350 last year and you're absolutely right about the throaty sound and extra pep, love the way it purrs, actually growls.😎
I found that the combination of the DNA filter and the fuel x light was the big game changer on the J series motor and i advise everyone with a DNA kit to also fit one as these run a little lean anyway so there is the potential for longer engine life
Fitted this to my bike and it makes a huge difference, gives the bike more get up and go, speeds up quite smartly now. For you're next step try the decat pipe rather than a full system change.
Great review of a real world modification which doesn't cost tgd earth and nakes a difference where it matters, the mid range. Many thanks Stu. Hitchcocks accessories here I come! I'll fit it at the 3k mile service which I'll do myself. Keep up the excellent work Sir!
I agree the DNA filter stage 2 kit makes the throttle response much better. I will be interested in your take on the Hitchcock’s stainless exhaust (if that is what you are going for). For me the weight difference is the key advantage with the exhaust.
It used to be common for induction to be direct into the carb ... no air filters at all. This is not so very long ago, either. So, I'd be minded to run the bike without any filter fitted, simply to observe the improvement in performance. If I liked what I saw, then I might splash out on a fancy air filter.
So went for a blast with a big hole drilled in the cover last night. Not a big difference in performance but a little induction roar. Then tried no filter or cover. Noisy as hell but did feel much more responsive but no difference in power. Today, fitted the performance filter and cover. Still loud but boy what a difference in performance. Better off the mark; not much difference in low midrange but then almost 2 stroke like a power band at mid to high revs. Hits 70 very much quicker and would make fast A roads much more doable. It’s noisy too. Do I like it? well yes but I feel it takes something away at low midrange which on small single tracks is where you want it. I’m guessing it could be giving you as much as a 15% power increase but at the expense of some low to mid range torque. It improves the breathability of the bike to such an extent that your through peak torque before you know it and ramping the nuts of the old girl. I experimented a bit with holding her at 1/4 throttle and in this way you can still ride like before. Whichever way you look at it it’s a massive increase in performance but at the expense of considerably increased noise. Need another blast when the rain stops to be a bit more definitive but I think it’s a mod worth doing.
Wheelspin - on a Classic 350 😳 who'd have thought? 👍😁 I must admit, I was a little skeptical of this mod Stu. I honestly thought the performance benefits were a result of human psychology - hearing the increased induction noise tricked us into believing the gains were real. So, thanks for doing this - I was kind of waiting for my trusted youtuber to give us the honest report. I don't like the various fuelling tricking devices though (Fuel X etc) as I still think it might be a bodge - akin to leaving the choke slightly on in the days of such a control. Proper remapping might be the correct solution instead, but for Royal Enfield at least these remain rather elusive at the moment.
On my otherwise stock 2019 390 Duke the FuelX Lite acts nothing like a bodge. It idles more stably, has become smoother at low to medium revs and has become more usable below 6000 rpm. Most new bikes run extremely lean from the factory. This device targets a near stoichiometric air-fuel ratio. Of course, since it manipulates the lambda signal, it only works as long as the ECU works in closed loop mode.
Excellent video Stuart! I find DNA Air Filters can pay for themselves quite quickly if you actually use your bike! 😀 Prior to 2015 a lot of ECUs, but not all, were "self-learning" provided they had the appropriate sensors (O2 sensor etc). The usual procedure with those is, if they have a radiator fan, run the engine until the fan cycles once (switches on, runs then switches off). So if you want to add a DNA Air Filter to older bikes (usually 2006 > ) try that to reset the ECU...
Have 1500 miles on since DNA upgrade. Checked the plug and was a very light grey. Possibly a little lighter then the fawn colour that i’m used to with right mixture. Can someone who has no mods check their plug and report. As a lean burn motor it may be fine and there was no sign of damage to the electrodes. Unmodified( tried the fuel x for a year but it threw a wobbly and coked up the O2 sensor, so binned) got up to 90mpg. With this mod it’s doing 80mpg. Thats good news as it indicates the ECU is upping richness to counter the increased air flow. However I am riding at considerably more pace with this mod!!!
Tripper, heel toe shifter, touring seat, DNA filter…never had a moment’s worry (touching wood). Use the bike for work and am in the middle of a two empty mountain road paradise tour ! I have ridden everything from 50s to 1340s and this bike is just as much fun bothfor work and touring.
Stuart, I have a K&N in my turbo diesel Peugeot and a BMC in my Suzuki SV1000. I wash them out with Johnson's Baby Shampoo - ph neutral and highly appealing to chaps existing at a thrift level which'd make Ebanezer Scrooge seem reckless.
Great video Stu , this bloody weather lol , I really like the DNA air filters , I got one on the Interceptor and along with the straight through pipes I did notice the difference , and the sound is amazing.
When new my classic was new it did occasionally appear hesitant on the throttle when pulling away. So bought the fuel x. After that packed up 18 months later with 15,000 miles on the clock, I removed it. Now the bike very rarely feels hesitant and feels loser. No Doubt in my mind that bike feels nearly run in but a little tight at around 2000 miles but definitely takes 4000 to really loosen up. It then gets better and better. However definitely doesn’t breath brilliantly so have just ordered this kit on Stu’s recommendation here. I think that the initial hesitancy may also be linked to compression. The engine breaking( compression) is great on this bike but when new may act to magnify poor breathing. As this drops off the poor low end breathing is less noticeable?
I've just looked up the prices of both the K & N, and the DNA air filter, there is a difference of almost thirty Euros, the DNA being the more expensive. Does the cost equate to efficiency. Certainly most of what l read the DNA allows greater airflow...allegedly... l have a K&N filter fitted in my Street Triple 675... (cleaned and re-oiled once)... Performance wise l noticed an immediate better throttle response, much the same as you describe...l guess it's all a matter of personal choice, and cost if applicable. Either way it's a cheap method of unleashing a smoother responsive engine with perhaps a small HP gain..Acceleration is often more useful than top speed anyway...Greetings from Red Hot España..
An air filter note. In a dusty desert environment the paper filters catch more and finer particles than performance filters and may be safer for the motor. I’m sure it’s not a problem in most environments.
Thanks Stuart. I've now ordered a DNA filter and cover for my meteor along with the FuelX lite. Hopefully these mods will improve mid range power and allow the engine to run cooler.👍
Seen some folks just buying the cover plate, without the filter it's self. This is about £40,which is a big saving. Would be interesting to see the results of going the budget route to increasing overall performance.
The speedo problem isn't sorted on newer bikes. I purchased a 2023 350 classic this summer that had just arrived in the local dealership, and the issue started shortly after my 300 mile maintenance.
Can’t speak for the Classic 350. But on the Himalayan / Scram forums, it’s been documented that the DNA filter on its own makes the bike run lean. The real improvement kicks in when a Fuelx fuel controller is added to the setup. That’s gonna be my first port of call.
I did a similar thing to an SV650 I had. The mod was more involved, but the end result was an improvement to an already good bike. I think I'll look into it for my F800GT...
Wathing your video and looking back through your 350 videos, what was the stage 1 modification? And is there any point in fitting a Hitcocks camshaft? Did like the Roar rather than puff, definately sounded more purposeful. Disappointed to hear they restrict the bikes performance over 70-75 just where you might need that little extra, especially if your intension is touring France where the speed limit is 80 mph!! Great work Stuart.
Would respectfully disagree about performance filters as almost all of them do not filter smaller micros as paper elements do. K&N was by far the worst offender as I have seen fine dust on the clean side of the intake when working at a ford dealer as a technician, these trucks however were used in a dusty environments(not what most would find on the road). There are different ISO certificates for coarse and fine dirt. I do agree with everything else however and snorkels and filter covers are the best to get more airflow and again induction noise.😂
Sounds like a very worth wile mod. My Meteor will get one soon. On the subject of the speedo, check out "Ride with Worro ". He found the cause and fixed it by cleaning out the excessive grease in the electrical connection to the speedo, with contact cleaner. BTW, your description of the negative effects of the standard paper air filters, sounds like you are describing an N95 mask. A fact also scientifically proven. 😂😂
@@seanb1081I've had the same issue with my speedometer. As per the Warro video I cleaned the inside and it seemed to work OK for a few days but the problem turned. So I again repeated the process of cleaning the inside and for the past month I've had no further issues. The problem started when I left the bike on the drive in direct hot sunlight. That was June. I think when the weather is hot it causes the speedometer to read high. I was told this is a design issue and R.E replace the speedometer with the same type!!! Will have to see how Stu gets on with his warranty claim.
@@carltonwittland1300 when I was speaking with the service manager at the bike mechanics this morning I asked him what RE in India finally decided what the problem with the Classic 350 speedo was. They have now admitted that due to poor thermal insulation around the speedo it plays havoc with the speedos electronics. The new speedos that they are now supplying are supposed to have better insulation to prevent the same issues happening aging. I road 81 Km to the mechanics today and the speedo behaved perfectly. It was only a temperature of about 24 C on the ride there. If it had been hotter the speedo wouldn’t have read correctly during the ride.
Hi Stu, if you could only own a Classic 350 or an Interceptor, which would you choose? I'm torn between these two gorgeous bikes, and the power limit is a concern although I find the classic 350 the prettier bike with a better seated position.
Had the Interceptor as my last bike, you will find the Classic when fully run in at around the 2000 miles mark will do 90% of what the 650 can. Only on duel carriageways do you notice the lack of top speed.
Great vídeo! I have a doubt... What about the exaust? Does changing the exaust for a less restricting one makes any difference? I think it should also help increase the air flow.
Another great video, Stuart. I have been wondering, as you ride the REborn Classic 350 more, do like it as much or more than your Classic 500? I recall early on, you noted you would choose the 500 over the 350. I recently spent a few hours in the saddle of a 2017 Classic 500. I found the bike to be about as close to a bike built in the 40's or 50's as one can get in modern times. However, I decided not to add it to my collection as I found it to be not as enjoyable to ride as the new 350. I just know that it would sit and I would choose the 350 to ride on any given day. With that said, it is nice and very old school. But, I find the 350 to possess all the charm and personality of the 500 with little to no shortcomings. The 350 J engine is pure magic in my humble opinion. I simply walk past my other bikes 90% of the time and toss my leg over the 350.
Yesterday I put a deposit on a 2023 Classic 350 Stealth. Last year's model was a reduced price and I like the matt black out paint scheme and the cast wheels. Having gotten a nail puncture in a tube type tire while away from home this model's cast wheels was another plus. I will be making the changes advocated here in this video and I have a question regarding the air filter change. Is it simply the DNA filter and the cover? Are there any changes to the air box itself? Should I wait until the engine is properly "broken in" before making the change? I am impatient like a child on Christmas Eve awaiting shipment of my bike from Texas to Louisiana. 😃🙏
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Very surprised to see rainy cool weather in the UK according to Mr Gutteres it's "climate boiling". Good advice re filters. Thanks Stu.
It’s all about the jet stream, and we’ve been above it for about 6 weeks. Low pressure = unsettled weather and rain. Temp’s are ok though.
We've got a rainy one month summer with around 18 degrees in southern Germany. Way too cold and wet.
There is no “climate emergency”. It’s a massive con.
My RE Classic 350 Signals Edition has 4200 miles. After a recent 2400 mile trip I elected to change the oil (as I do after all long trips). I was surprised to find metal chips in the oil (below the basket) and a significant amount of bearing material in the filter. I followed the factory recommend run in procedure and maintenance schedule. Just FYI for your channel watchers, keep a close eye on your oil. Still waiting to see what Royal Enfield is going to do. I'll follow up with there actions/findings.
Doesn't bode well.
Royal Enfield elected to do a compression test and check Valve clearance, both of which are fine. They've chosen not to inspect the rotating assembly, which is where all of the metal is coming from. I will just rebuild the lower unit myself, I don't want it to self destruct.
@@deanomachineo7281 This is slightly disappointing / concerning to hear, as 1 - I'm picking up RE Classic in a few weeks, and 2 - I've nothing but stellar reviews about their customer support / warranty
@@csc-photo I haven't lost faith in the product, the little motor still runs strong. RE produces 800,000 bikes a year, they're bound to have an occasional issue. Like all problems, you need to talk to the right people. I may attempt to contact RE directly through my attorney and see if that moves things along. I have two RE bikes and will likely purchase the Shotgun model when it arrives in the U.S.
Hi Stuart
My wife owns a Classic 350 in Halcyon Green as her first motorcycle here in Melbourne, Australia. As a former Triumph Thruxton and current Kawasaki Z900rs owner I was initially sceptical of Royal Enfield based on what I've read online, but I've been blown away and pretty impressed with Royal Enfield! It's been an amazing bike for her to learn on, and now we've just done the DNA Stage 2 air filter upgrade as you have done and what a difference it's made! So much more responsiveness in the low end and the increase in performance has been extremely noticeable. Great little upgrade for this model, and it's actually noticeable which is great. I've ridden her bike a few times now and it's made such an impression on me that when the time comes for my next bike in a few years I will definitely have Royal Enfield at the top of the list. Hopdfully by that point we will have seen a Classic or Bullet 500 in a single cylinder configuration, or if not a 650 version or even an updated Interceptor 650.
Great work on the channel, really enjoy hearing your views and opinions and look forward to seeing more Enfield and Triumph coverage 👍
I fitted the DNA filter and plate to my Hunter 350 today. Took her for a 60 mile run and the difference was immediately noticeable. The bike gets up to speed a good bit quicker and pulls up hills far better. Best £100 I have spent in a while 😊
How about fuel consumption?
das DNA filter hat keine E 11 Nummer für die zulassung, die Betriebserlaubnis erlischt, die Strafe in deutschland sind sehr hoch.
Have just ordered one from Hitchcocks looking forward to fitting it
Really great episode Stu, (I’ve been interested in air filter and air-box design since I was a performance engine apprentice back in the 1970s) and I found your explanation completely on the button. All the best and here’s to some decent weather soon hopefully! 👍🙏
With your speedo issue - an Aussie youtuber (Wazza) had the same issue. He pulled out the headlight to get to the speedo and unplugged it (speedo). Inside the plug was grease or Vaseline - he cleaned it all out of the connecting two plugs, dried it and wa-la......it works again.
Probably Dielectric Grease
Maybe worth it to fit shrink tube over these contacts in the headlight assembly if you remove the dielectric grease.. Shrink tube prevents moisture from entering the contacts and should prevent corrosion. Also wise to have nametags on the different connectors w/heatshrink so it is easier to find them again later on if the need for more maintenance arises.
Did the filter and free flow pipe, engine was running hot so also installed the fuelx lite, which sorted it. All three changes have improved flow and sound of the bike. A lot smoother, with raw sound which is louder.
I put a DNA plate on my Hunter 350 using the OEM filter. You can tell a difference, especially going into 5th gear. I think I will order a filter to complete the upgrade.
Hi guys I've tried every upgrade on the royal enfield classic now I'm back to stock. In my opinion the bike only benefit is the DNA filter which I have kept on and I think that's all you need .Thanks for a honest video be safe 🙏
Quite amazed at the difference it made. Must see what i get an my SM650 and Scram 411 with the filter changed.
Saw more difference with the cover plate change than the filter. Tried it both ways. The cover seems to be 80% of the improvement to me. Either way you feel the change in the seat of the pants!
Yes, quite likely when you look at the original part.
Yeah this has been discussed in previous videos. Short term it feels great but paper filters are an exercise in diminishing returns. As it clogs those gains diminish until you're back to square one and then need to replace the filter. Performance filters dont clog unless they have been left too long between cleaning and are really overloaded. 50,000 miles +.
@@stuartfillingham
Ageed. Used these type of filters on a couple of cars. Unfortunately it's hard to notice such a difference on a high horsepower car. You got me interested in this. Think I'll put the paper filter back in and see how long it takes to see a drop in effectiveness. I'm guessing, now this is really a guess, if you maintain the bike as you should, the filter will be changed before the drop is noticed. But with such an improvement, I could be very wrong. This could be a long term dollar and cents thing, depending on how much you ride. I'll let you know what happens......
@@stuartfillinghambut the paper filter as shown by testing of huge numbers of oil tests and others is better at filtering the air and thus less engine wear.
Never moded any bike before but I was pursuaded to just change the air filter cover on my Hunter 350 and was amazed at the difference it made. I was truly sceptical to do this so was only prepared to spend the minimum amount but Im so glad I did. I felt a good increase in power from the off and the engine sounded much more racious which felt odd at first as my Hunter always sounded a bit anemic to me. I dont understand what 'indiction' noise is but to me it just sounds like Ive upgraded my exhaust so all this for under 40 quid is amazing! Thanks guys!
I have done this mod on a Meteor 350 and agree about the improvement in torque. The original filter cover fits inside the air box aperture whilst the DNA cover plate sits on top. The diameter of the resulting inlet ports is increased by 10mm. Not sure of the maths but the increase in area is what makes such a difference. More fuel/air mixture going in equals a bigger bang producing increased torque. Torque is what gives you acceleration.
Something you have not commented on Stu is how cooler the engine now runs when you do these filter changes, esp with also a de cat pipe fitted, on the hottest days I can stop and hold a bare hand on the crankcase no probs, before in stock form, the engine was roasting,
My Classic 350 has over 8500 miles and been set up like this since 2000 miles,
Now, a lot of folk on FB pages etc said don’t waste your money on these mods I say have a ride on my bike alongside your stock bike or watch my films and watch the mid range power differences 😁👍
Hello Stuart, i'm from Argentina and i've heard that in our neighbour Brazil they are tunning the ECU to override the speed limit which is 120 km/h they managed to push the 350 up to 140 km/h (or so i've heard) , and some tuners start to sell it here in Arg. that ECU tunning.
That would convince me to buy one. Really surprised no one has come up with that mod. Hitting a stop at 72mph is really not good on british roads.
Hey Uncle Stu if you've been having issues with the speedo getting stuck at 20MPH or higher here's the fix. I had the issue with speedo right around 800 miles the first time I took off the connector and cleaned it with electrical contact cleaner allowed it to dry then reconnected and the speedo was fixed, it reset and operated as normal. Well, so I thought but it did it again at 1600 miles and I was going to get a new one from RE BUT I wanted to know why this was happening, so I disconnected it again and when I inspected the male pins there was a tinge of green which of course is corrosion and we all know what happens when there is corrosion and electronics... electronics go wonkie... so this time I put a light coat of dielectric grease. So far at 3000 miles I have not had any issues. I don't know if you've seen this where on a warm day you get condensation behind the glass at the fuel gauge and at times in the lower portion of the speedo. So my conclusion is there is moisture getting to the contacts and corroding out the pins and the only way to fix this is to clean the contacts and add dielectric grease to the pins so they do not get any corrosion.
I had the same speedo problem. Once the first day I pick it up from dealer (was very hot). Then many months later when the summer was back. Did the cleaning of connectors. Happens again perhaps twice in the same month (but back to normal was quicker). That was in June. And never again since then, although we have had an hot summer.
@@terceladdict It will generally happen during the days when the sun heats up that speedo assembly... I think it's because the speedo is not sealed properly... also for those who have a repeated problem for this issue you can always remove the front head lamp assembly the way you normally do to get to the speedo assembly disconnect the connector turn the key to on and then off then reattach the connector turn the key on again and the speedo will reset itself.
@@RonConsumer Maybe worth it to fit shrink tube over these contacts in the headlight assembly. Shrink tube prevents moisture from entering the contacts and should prevent corrosion. Also wise to have nametags on the different connectors w/heatshrink so it is easier to find them again later on if the need for more maintenance arises.
Well, I just ordered a DNA high-performance air filter for my Triumph Speed Twin 1200, based on this video, as I have great faith in your recommendations, Stuart😊
When I was an engineering student, a friend and I did a tuning project on what at the time was my winter bike. The aim was to get as much power as we could without ruining the rideability. We chose a K&N filter which appears to have identical construction to the DNA item shown. I can testify that these work and work well with minimal maintenance.
Of course this was not the only mod. The bike was a 2 stroke single and had head, barrel and exhaust mods too. I'd choose this type of filter again though which I guess is the acid test.
Brilliant video as always Stuart and absolutely sound advice regarding performance filters 😌👍🏻
Put this DNA combo on my Meteor 350 and immediately noticed better low-mid range power and improved sound, especially revving through gears 3 and 4. Btw, the speedo issue seems quite common on the Classic 350. Others have been able to fix this by cleaning the contacts.
Interesting experiment. Here's a thought... If the ECU governs speed by checking the speed from the ABS sensor then the ECU must be programmed with the size of the front wheel. Since the hunter has a 17" front wheel the ECU must have a slightly different program that allows the front wheel to spin faster than the classic of meteor. So.. if you switched the ECU on the classic for a Hunter ECU the top speed would be limited to 75 x 19/17 = approximately 84mph indicated. Because the ECU thinks that the front wheel is smaller than it really is and needs to spin faster to reach an indicated 75. This of course assumes that the front disc and ABS ring are the same on both bikes. If the difference is in the ABS reader ring then perhaps that could be changed.
Thanks Stu, I've ordered mine as well and hope to see the same results soon enough, once fitted.
Thank You For All You Do! Have never sent a comment to any RUclips posts. Lifetime Brit Bike rider/racer/mechanic. Turned 300mi on my 350 RE Classic. First service took much longer than expected, but your video saw me thru. Am on wait list at Hitchcocks for a cam. added a Tach, hard bags, Harley windshield and a decat . (Kansas has no inspections) Cheers!
PS: the valves were set extremely tight....004 intake, .14 exhaust, just a mention for your viewers thinking of skipping the first adjustment.
Completely agree, I fitted the stage 2 after the engine had run in and there was a noticeable improvement, next step is to fit a Hitchcocks decat pipe and see how that goes. As always an informative and interesting video. Thanks Stu.
Do it! We did just that on our Royal Enfield Classic 350 and love the combo!
You'll be happy, and you get rid of that hideous cat on the center of the exhaust. The Hitchcock's is a nice piece and has all the gaskets...
Ride Safe 🙏🏼
Hello, is it street legal to de-cat ?
Stuart is right. Performance filters do not harm engines. I have had several. One of my current bike's low/midrange performance has been radically improved. If you own a KTM 390 Duke Mk2, fit a K&N filter and drill six holes in the airbox cover. No repapping necessary.
Good video. 1990 [Nick J]
If you are talking about the 2017+ 390 Duke, those holes in the airbox cover need to be covered by some sort of filter material or you will draw too much dirt into the engine since you are effectively bypassing the air filter.
@@twowheeledparadox The mod was done by KTM Bangkok years ago. No problems experienced.
@@1990-t1j I would still recommend a review of the mod. Air is pulled into the airbox from the underside of the air filter. When you open the airbox cover, the side of the filter that you can see is the exit side. Air that enters the airbox through the holes in the cover will not pass through the filter. You might as well drill holes into the filter itself and the effect will be the same. It's unfiltered atmospheric air with all the dust it contains going straight into the throttle body. You won't see problems yet but expect the engine life to be cut a little short.
@@twowheeledparadox Why would KTM Bangkok do the mod, then?
@@1990-t1j No idea why they would do that. I'm just telling you the facts. You can check out the KTM 390 forum online for this topic. Also, brands like Coober in the US make airbox lids for the 390 with an integrated filter for a reason.
Morning Stewart. Informative as always sir. One afternoon in 1982 my wife and I went into a small custom motorcycle shop in Watford just for the ride and a look see at what's new. Sammy called me over and said what's this? It was a sleek sexy looking well made chrome air box that fitted all Honda 750 Fours. So I bought it along with some filter sponge spray. But when I went to fit it, I really didn't like the very light sponge filter that came with it. So into the shed and I dug out our spair pond filter sponges. Using the sponge that came with the filter as a templet I cut, oiled and installed the slightly more thicker sponge, then we went for a ride. From the off throttle response to the back wheel was oh so noticeable. And the only adjustment needed to the carbs was as stated by the shop owner. 'You might find you'll need to lift you needles up one notch', he said. And he was right. You could hear how much better the bike was breathing and with the original black box removed our K7 looked less cluttered side on. Better days for sure 👌. Good luck with your warrenty claim and I hope it goes through okay. Safe cruising till next time Stewart 👍😊.
Certainly wont argue about anything you said.
This filter made a truely noticeable difference in low down grunt ignoring the better induction noise.
Left off the document case
I worked out the cost of the DNA service kit which imho is enough for two treatments as long as you reseal the bottles against renewing the standard paper filter every service.
But even if you use all the cleaner (oil? it says you dont need to use it all)
Its cheap at around 15 quid for the big improvement gained .
I put the Hitchcocks open cover on my Meteor at around 1,000 miles in. I noticed a difference immediately and agree as you describe here. At the 2,000 mile mark I took the open filter cover off and put the original back in as I wanted to see if a looser engine would counter any gains from the open filter cover and I was surprised at the noticeable slower difference going back to the original. It didn't take me long to decide to swap them over again. If I was only allowed one modification on my Meteor, it would definitely be the open filter cover.
I have the air filter, decat pipe and fuel x lite on mine. Pulls better and handles raised gearing so relaxed cruising at 60-65mph rather than the 55-60 previously. Sounds nicer too - but not offensive.👍
Hi what silencer have you got fitted
@@RockDinosaur695 standard silence. The decat pipe was from India cheap and arrived within a week!
I have a similar setup (DNA intake, cat delete full exhaust, and FuelX Pro). I just ordered a cam from Hitchcocks and still waiting on the 16 tooth front sprocket. 🍻
@@flapjackphil4513do you have a link to the product? Thanks
@jakeford2313 how's the bike running now? And could you also tell me if it requires oil change more frequently than before? Just curious to know, thanx in advance
We put these on three of our Royal Enfield Classic 350 and the Hitchcock's decat pipe. Together, it's a great change and feels/sounds better!
Just makes it a little more rumbly and everyone loves the changes.
Ride Safe 🙏🏼
Today I handed over my 2022 Classic 350 to a local bike shop so that they can replace the original "doggey" Speedo. I let you know how it goes (here in Australia) once I get the MC back.
I wasn’t going to modify my Classic 350 Signals then I saw Uncle Stu’s review, Hitchcocks !
Got mine set today and it's definitely a big improvement 👌🏼 thx for the introducing 🙏🏼
Great video. The only criticism of my 350 was ‘if it only it could have a bit more power’ and this looks like a simple fix even Muggins here could do myself. I mainly commute and at times just a bit more power would be nice to have. Cheers
I just installed the DNA stage two kit on my Hunter 350. It has done much as you describe, even with the Hunter already having a sportier tuming. And the intake sound is a nice bonus😎
Good Morning Stu , A very good presentation take care & ride safe
Yeah, after about 1,500 miles, the bike has become much more flexible with improved overall performance. Having watched both yours and a few other videos on the net, I installed one of these, they are quite expensive but, I am positive it was money well spent. Was surprised at the induction noise and yes, it is more eager than before, it lopes along with a freer character, won't bother with anymore upgrades because it doesn't need them, plus it wouldn't suit the bikes vintage type appeal. Thanks for the video
so the ecu only 'learns' at idle? What evidence is there to back that claim up? Cheers.
I got the DNA kit and changed the filter for my 2023 Classic 350. Positive changes were easy to hear, see and feel: the motor runs firmer with fantastic growling bass sound, bike accelerates better (with awsome sound) and even increases speed while climbing steep uphill on the fifth gear. That was not an easy task to do with the RE stock air filter. Fibes got a bit more stronger, but that is not an issue at all. MPG or in my case KMPL got a little worse according to the initial calculations. Old configuration meant 2,7 litres per 100 km where as the new one makes it 3 litres per 100 km. Not a big thing and the positive changes override it with no sweat. Highly recommend the air filter upgrade: it makes the great bike even greater!
After several bikerides and LPKM calculations it was a pleasant suprise to notice that fuel consumption has changed to a level of 2,5 litres per 100 km. Has the EFI got something to do with it by finding proper parameters?
Just ordered same bike in bronze/chrome, watching you ride yours and tinkering made me want one, and just ordered filter, don't get the bike till next week😂, keep up the good work, love the content
I made this mod to my Himalayan 10k miles ago. I’m able to accelerate up hills that previously speed could only be maintained on…the difference noticeable.
On the nose Stu , changed my meteor and it really does make a much better bike , as an observation I idled mine for 10 mins , don't know where that advice came from but glad i.did it .
My meteor seems to.want to.go.more over 60 , it soon reaches 75 and bounces the limiter, I tried an old coach driver trick with the limiter, you let it hit the limit ease off and then nail it and no you can't break.through. Will.experiment with a steeper downhill , I won't hold my breath , but if it works I will report back .
I will say though I don't really want to.Ride like a seventeen year old . Cheers Stu , good riding
Just thinking back to the days when we used to rip out the paper from filters and stuff them full of wire wool, Used Brillo pads were the preferred option. Don't advise anyone to do that though. Here in Australia (NSW) we have funny regs when it comes to licence renewal tests (MOT tests) might have to check out whether a DNA filter would pass the test not being E5 etc rated.
I'm an Aussie also living in NSW. I rekon the simplest way to pull the wool over any rego check place, would be to just temporarily re-install the OEM filter, when it's time to get a rego check. After the bike has been checked off, then re-install the DNA filter.
@@seanb1081 Thought the same thing. The orignal cover is stamped with E5 E11 etc so that might be what the checkers go by. What I might do though is check with my local rego garage and see if it would pass. If I find out anything I'll post it.
Checked with my local rego checker who is meticulous and he says a high flow air filter won't affect rego check in NSW.
Done it to my meteor 350….. definitely recommend it, slightly louder and throttle response is better…..
Also put an Emgo exhaust on it, now it breathes way better 👍
Thanks!
Thank You Bob!
That was a very laboratory scale observation. Thank you for your effort.
I installed a DNA filter and cover on the Meteor 350 last year and you're absolutely right about the throaty sound and extra pep, love the way it purrs, actually growls.😎
I found that the combination of the DNA filter and the fuel x light was the big game changer on the J series motor and i advise everyone with a DNA kit to also fit one as these run a little lean anyway so there is the potential for longer engine life
Fitted this to my bike and it makes a huge difference, gives the bike more get up and go, speeds up quite smartly now. For you're next step try the decat pipe rather than a full system change.
Great review of a real world modification which doesn't cost tgd earth and nakes a difference where it matters, the mid range. Many thanks Stu. Hitchcocks accessories here I come! I'll fit it at the 3k mile service which I'll do myself. Keep up the excellent work Sir!
I agree the DNA filter stage 2 kit makes the throttle response much better. I will be interested in your take on the Hitchcock’s stainless exhaust (if that is what you are going for). For me the weight difference is the key advantage with the exhaust.
Excellent info as usual, thank you. I'll be ordering one.
It used to be common for induction to be direct into the carb ... no air filters at all. This is not so very long ago, either. So, I'd be minded to run the bike without any filter fitted, simply to observe the improvement in performance. If I liked what I saw, then I might splash out on a fancy air filter.
Thanks
Thanks Nick!
Nice one Stu, makes a lot of sense, for a reasonably small sum
I did this on my Meteor, really noticed the difference in 50-70MPH acceleration
So went for a blast with a big hole drilled in the cover last night. Not a big difference in performance but a little induction roar. Then tried no filter or cover. Noisy as hell but did feel much more responsive but no difference in power. Today, fitted the performance filter and cover.
Still loud but boy what a difference in performance. Better off the mark; not much difference in low midrange but then almost 2 stroke like a power band at mid to high revs. Hits 70 very much quicker and would make fast A roads much more doable.
It’s noisy too. Do I like it? well yes but I feel it takes something away at low midrange which on small single tracks is where you want it. I’m guessing it could be giving you as much as a 15% power increase but at the expense of some low to mid range torque.
It improves the breathability of the bike to such an extent that your through peak torque before you know it and ramping the nuts of the old girl.
I experimented a bit with holding her at 1/4 throttle and in this way you can still ride like before.
Whichever way you look at it it’s a massive increase in performance but at the expense of considerably increased noise.
Need another blast when the rain stops to be a bit more definitive but I think it’s a mod worth doing.
Wheelspin - on a Classic 350 😳 who'd have thought? 👍😁
I must admit, I was a little skeptical of this mod Stu. I honestly thought the performance benefits were a result of human psychology - hearing the increased induction noise tricked us into believing the gains were real. So, thanks for doing this - I was kind of waiting for my trusted youtuber to give us the honest report.
I don't like the various fuelling tricking devices though (Fuel X etc) as I still think it might be a bodge - akin to leaving the choke slightly on in the days of such a control.
Proper remapping might be the correct solution instead, but for Royal Enfield at least these remain rather elusive at the moment.
Your right. I tried the fuel x and it ended up screwing the O2 sensor. Just riches the mixture.
On my otherwise stock 2019 390 Duke the FuelX Lite acts nothing like a bodge. It idles more stably, has become smoother at low to medium revs and has become more usable below 6000 rpm. Most new bikes run extremely lean from the factory. This device targets a near stoichiometric air-fuel ratio. Of course, since it manipulates the lambda signal, it only works as long as the ECU works in closed loop mode.
Excellent video Stuart! I find DNA Air Filters can pay for themselves quite quickly if you actually use your bike! 😀
Prior to 2015 a lot of ECUs, but not all, were "self-learning" provided they had the appropriate sensors (O2 sensor etc). The usual procedure with those is, if they have a radiator fan, run the engine until the fan cycles once (switches on, runs then switches off). So if you want to add a DNA Air Filter to older bikes (usually 2006 > ) try that to reset the ECU...
Great video I've just bought the enfield hunter very nice thanks for the info on the air filter very helpful cheers.
Top share and mod, thanks Stu!
Have 1500 miles on since DNA upgrade. Checked the plug and was a very light grey. Possibly a little lighter then the fawn colour that i’m used to with right mixture. Can someone who has no mods check their plug and report. As a lean burn motor it may be fine and there was no sign of damage to the electrodes. Unmodified( tried the fuel x for a year but it threw a wobbly and coked up the O2 sensor, so binned) got up to 90mpg. With this mod it’s doing 80mpg. Thats good news as it indicates the ECU is upping richness to counter the increased air flow. However I am riding at considerably more pace with this mod!!!
Tripper, heel toe shifter, touring seat, DNA filter…never had a moment’s worry (touching wood). Use the bike for work and am in the middle of a two empty mountain road paradise tour ! I have ridden everything from 50s to 1340s and this bike is just as much fun bothfor work and touring.
…edit…two week…
Stuart, I have a K&N in my turbo diesel Peugeot and a BMC in my Suzuki SV1000. I wash them out with Johnson's Baby Shampoo - ph neutral and highly appealing to chaps existing at a thrift level which'd make Ebanezer Scrooge seem reckless.
Morning Stu. Good video. I shall have a look on your channel to see if you fitted a DNA filter to your interceptor. Take care.
Lots of food for thought there Stuart. Thanks for the information.
I put an ACE fillter housing on my 535 GT. It went on the outside of the air box and made a huge difference. I have been thinking of replicating that.
Great video Stu , this bloody weather lol , I really like the DNA air filters , I got one on the Interceptor and along with the straight through pipes I did notice the difference , and the sound is amazing.
Bloody atrocious today, Even had no power for a while!
When new my classic was new it did occasionally appear hesitant on the throttle when pulling away. So bought the fuel x. After that packed up 18 months later with 15,000 miles on the clock, I removed it.
Now the bike very rarely feels hesitant and feels loser. No Doubt in my mind that bike feels nearly run in but a little tight at around 2000 miles but definitely takes 4000 to really loosen up. It then gets better and better. However definitely doesn’t breath brilliantly so have just ordered this kit on Stu’s recommendation here.
I think that the initial hesitancy may also be linked to compression. The engine breaking( compression) is great on this bike but when new may act to magnify poor breathing. As this drops off the poor low end breathing is less noticeable?
I've just looked up the prices of both the K & N, and the DNA air filter, there is a difference of almost thirty Euros, the DNA being the more expensive. Does the cost equate to efficiency. Certainly most of what l read the DNA allows greater airflow...allegedly... l have a K&N filter fitted in my Street Triple 675... (cleaned and re-oiled once)... Performance wise l noticed an immediate better throttle response, much the same as you describe...l guess it's all a matter of personal choice, and cost if applicable. Either way it's a cheap method of unleashing a smoother responsive engine with perhaps a small HP gain..Acceleration is often more useful than top speed anyway...Greetings from Red Hot España..
Thanks. Very instructive. Looks like I'll be getting DNA filters for both my bikes!
An air filter note. In a dusty desert environment the paper filters catch more and finer particles than performance filters and may be safer for the motor. I’m sure it’s not a problem in most environments.
Thanks Stuart. I've now ordered a DNA filter and cover for my meteor along with the FuelX lite. Hopefully these mods will improve mid range power and allow the engine to run cooler.👍
Best video I've seen on the subject Stuart, thank you. Are you running the stock exhaust?
Yes I am!
Thanks a lot! Very helpful video, mate! Enjoy the ride
Seen some folks just buying the cover plate, without the filter it's self. This is about £40,which is a big saving. Would be interesting to see the results of going the budget route to increasing overall performance.
mine is run-in now, i shall have to consider the filter upgrade, thanks
Thought about this and now I will be doing it. Not bothered about top speed but lower down is what I am interested in. Many thanks.
Yes, I did this for my meteor and I'm able to hit Eco mode in 5th all the way up to 55mph.
Im off out to the garage to drill a big hole in the current cover before the new kit arrives:)
The speedo problem isn't sorted on newer bikes. I purchased a 2023 350 classic this summer that had just arrived in the local dealership, and the issue started shortly after my 300 mile maintenance.
Can’t speak for the Classic 350. But on the Himalayan / Scram forums, it’s been documented that the DNA filter on its own makes the bike run lean. The real improvement kicks in when a Fuelx fuel controller is added to the setup. That’s gonna be my first port of call.
well they are a lean burn engine!
I did a similar thing to an SV650 I had. The mod was more involved, but the end result was an improvement to an already good bike. I think I'll look into it for my F800GT...
Wathing your video and looking back through your 350 videos, what was the stage 1 modification?
And is there any point in fitting a Hitcocks camshaft?
Did like the Roar rather than puff, definately sounded more purposeful. Disappointed to hear they restrict the bikes performance over 70-75 just where you might need that little extra, especially if your intension is touring France where the speed limit is 80 mph!!
Great work Stuart.
The hunter has no limiter. DNA. Makes 80 ml/h possible.
Hi uncle Stu'. A question just a bit off topic but, have you tried an iridium plug in the 350 Reborn?
Thanks for the info uncle Stu
thanks for sharing Sir!
I opted for the hitchcock's modified air filter cover instead. the DNA filter is way too expensive for what we get... imho.
For a reusable filter that lasts the life of the bike?
Nice one Stuart, quick and easy upgrade...
Another interesting and informative video, thank you very much.
Maybe fit the hitchcocks camshaft, heard it transforms the bike, especially with exhaust and filter mods?
Would respectfully disagree about performance filters as almost all of them do not filter smaller micros as paper elements do. K&N was by far the worst offender as I have seen fine dust on the clean side of the intake when working at a ford dealer as a technician, these trucks however were used in a dusty environments(not what most would find on the road). There are different ISO certificates for coarse and fine dirt.
I do agree with everything else however and snorkels and filter covers are the best to get more airflow and again induction noise.😂
Sounds like a very worth wile mod.
My Meteor will get one soon.
On the subject of the speedo, check out "Ride with Worro ". He found the cause and fixed it by cleaning out the excessive grease in the electrical connection to the speedo, with contact cleaner.
BTW, your description of the negative effects of the standard paper air filters, sounds like you are describing an N95 mask. A fact also scientifically proven. 😂😂
Yeah I checked. They dont grease that connector!
I tried "ride with Warro" fix for the speddo. Nothing against Warro, but it made no difference to the speedo problem.
@@seanb1081I've had the same issue with my speedometer. As per the Warro video I cleaned the inside and it seemed to work OK for a few days but the problem turned. So I again repeated the process of cleaning the inside and for the past month I've had no further issues. The problem started when I left the bike on the drive in direct hot sunlight. That was June. I think when the weather is hot it causes the speedometer to read high. I was told this is a design issue and R.E replace the speedometer with the same type!!! Will have to see how Stu gets on with his warranty claim.
@@carltonwittland1300 when I was speaking with the service manager at the bike mechanics this morning I asked him what RE in India finally decided what the problem with the Classic 350 speedo was. They have now admitted that due to poor thermal insulation around the speedo it plays havoc with the speedos electronics. The new speedos that they are now supplying are supposed to have better insulation to prevent the same issues happening aging. I road 81 Km to the mechanics today and the speedo behaved perfectly. It was only a temperature of about 24 C on the ride there. If it had been hotter the speedo wouldn’t have read correctly during the ride.
@@seanb1081 thanks for the information. If it happens again which I'm sure it will. I will put in a warranty claim. Thanks.
Hi Stu, if you could only own a Classic 350 or an Interceptor, which would you choose? I'm torn between these two gorgeous bikes, and the power limit is a concern although I find the classic 350 the prettier bike with a better seated position.
Had the Interceptor as my last bike, you will find the Classic when fully run in at around the 2000 miles mark will do 90% of what the 650 can. Only on duel carriageways do you notice the lack of top speed.
Great vídeo! I have a doubt... What about the exaust? Does changing the exaust for a less restricting one makes any difference? I think it should also help increase the air flow.
Another great video, Stuart. I have been wondering, as you ride the REborn Classic 350 more, do like it as much or more than your Classic 500? I recall early on, you noted you would choose the 500 over the 350. I recently spent a few hours in the saddle of a 2017 Classic 500. I found the bike to be about as close to a bike built in the 40's or 50's as one can get in modern times. However, I decided not to add it to my collection as I found it to be not as enjoyable to ride as the new 350. I just know that it would sit and I would choose the 350 to ride on any given day. With that said, it is nice and very old school. But, I find the 350 to possess all the charm and personality of the 500 with little to no shortcomings. The 350 J engine is pure magic in my humble opinion. I simply walk past my other bikes 90% of the time and toss my leg over the 350.
Yesterday I put a deposit on a 2023 Classic 350 Stealth. Last year's model was a reduced price and I like the matt black out paint scheme and the cast wheels. Having gotten a nail puncture in a tube type tire while away from home this model's cast wheels was another plus. I will be making the changes advocated here in this video and I have a question regarding the air filter change. Is it simply the DNA filter and the cover? Are there any changes to the air box itself? Should I wait until the engine is properly "broken in" before making the change?
I am impatient like a child on Christmas Eve awaiting shipment of my bike from Texas to Louisiana. 😃🙏
Carefully brake this bike in first and then install DNA filter set.
I've got a hunter, I'm going to invest in this when I've got some spare cash x
Does replacing the stock filter with the DNA kit invalidate the RE warranty?
Just ordered mine 😁