Porsche 996 sports exhaust upgrade: factory v aftermarket test
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- Опубликовано: 21 ноя 2019
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The factory Porsche sports exhaust system on my 911 996 Carrera was rusted and in need of replacement, so I've used the opportunity to turn to aftermarket options in order to provide a little more bark to my 911's soundtrack.
I went for the Dansk Sport exhaust, a popular choice among many Porsche 996 owners. But is the system any good? I find out with a direct head-to-head comparison between the factory setup and aftermarket system, featuring before and after videos of start-up, rev, pull away, and in-gear acceleration all with my own 911.
What do I make of the change on my 996? And which system do you think is better?
The “FisterD” or “Gundo hack” muffler mod is the best choice for 996 or 997.1 in my mind, and happily is also the cheapest solution. Basically it’s a mod that partially bypasses the muffler, and is named after 2 guys on the Porsche forums who figured it out or did it first. The noise is glorious & there’s no drone unless you’re cruising above 4K. You can get the mod done locally or do it through the business Fister built around it in the US. I had a local muffler shop mod mine a year ago and I love it more than any other aftermarket exhaust I’ve heard. It basically changes the stock exhaust so that it’s the same as the Porsche sport exhaust under hard acceleration when the vacuum operated butterfly valve flips open.
Excellent. Love the sound of this (no pun intended). Have found a YT video about it so will have a watch and judge from there.
Yep always a good option, if your OEM mufflers aren't past it, like his were.
Yes also did the gundo "PS exhaust" version on my -02 and I would definitely prefer a bit more sound. But On the other hand, when travelling you will get more drone on a louder exhaust.
The gundo hack in my opinion is too noisy and has zero power gain. Moreover if your exhaust are corroded you will need to replace them anyway
Hi Lee, thanks for organising the Cobham meet last month. After a lot of research I went for the Miltek mufflers (UK based). I wanted an old skool air-cooled sound and these fitted that soundtrack - more of a deep bark through the rev range. Subtley quieter on the cruise without any drone. If you search youtube on 996 rally cars (admitedly most are GT cars, you get a similar soundtrack). Been running these for over 3 years now and had no problems, just the glorious unmistakable sound. Next time I'll give you a demo.
I had my 996 C4S fitted with Cargraphic exhaust system and very happy with it. Good sound over 3000 RPM and no drone while driving.
Watching with interest. According to my local specialist (jasmine) my 996 has a sports exhaust of indeterminate origin. It emits a glorious bark getting better when hot. Noise tested at Oulton Park a couple of weeks back resulted in a 101db pass. My 46M3 is at around 87 with standard exhaust. I still adore the Irish green paint 👌🏻
I have a 997.1 c2s. Had PSE that rusted - opened in the seams. After lots of research and doubds about where to go I landed on FVD Brombacher valved with 200 cell cats. FANTASTIC - much better sound than PSE. Only problem is that I get flagged for noise when on track with the valves open. But I just run with the valves closed. The Porsche ECU automatically opens the valves at abt 5000rpm even if I have the sport button off, but this is solved by just pulling the vacum hose from the vacum switch (both sides and then connect together). The sound is now absolutely fantastic. Just love it!
When I had my 996 C4S, I had the exhaust modified, to resemble the PSE option, sounded great. BUt obviously looked totally stock.
Hey Lee,
The Danske sure looks great on lil Irish !
I purchased mine with a full cargraphic exhaust and piperX air filter
It also sounds really great. Will have a rev off at Dorking soon :)
Have Dansk Sports on mine. After driving a friend's 996 with Dansk Super Sport that is what is going on next. I must have that sound in my life...
Nice to see an honest review..
Cheers Alan!
Hi Lee. Thank you for the videos I really enjoy watching them. I have a 996 C4S and spent a long time working out which new silencers to go for. In the end I chose DesignTex valvetronic silencers from Design911. As my C4S didn’t have a PSE I fitted an after market switch into the dash board, you really wouldn’t know it wasn’t factory fitted. The DesignTex silencers sounds amazing and I would really recommend them and the switch as it is good to turn them off on long motorway journeys or if leaving for a drive early Sunday morning! Wish I’d known about your 996 meet up, have now followed you on Instagram and will look forward to next years 996 meet up.
Thank you for the kind words, hugely appreciated. Great insight to the DesignTek system, a few people have mentioned that now. A switchable kit is appealing. Thanks for the IG follow, will look forward to meeting you at another Fried Eggs gathering.
I recommend looking at cold air intakes if what you are after is theatre and drama. They don't do anything performance wise but they definitely add a nice resonance. I have a full Gemballa exhaust system and even with this I noticed a definite improvement in the noise of my car when I added the cold air intake.
Nice, will do!
+1 for Carnewal. I have his modified OEM mufflers with normal OEM Cats...great sound, no drone & volume ok.
I did the beluga racing muffler bypass. I love it. Very loud!
Not heard of that, will have a look.
It’s quieter because your old mufflers had gaping holes down the sides. Break these open at the seams like your old ones and they will also be loud. Or, I’m sure you can still do the gundo even though they are stainless.
Personally, for a 996 daily driver, I like this exhaust.
Hi have Milltek Very happy with sound!
I bought a pair of silencers from eBay. They look and sound very similar to the set you fitted. They came from a company in Germany and were £379 for the pair. Also fitted a pair of stainless manifolds I got with the car. They have been on the car for 4 months now and the stainless still looks good.
I agree with you about the sound. Still quiet but no drone. Just a bit more rasp to the sound.
Big plus is the rotten factory silencers are in the bin.
Like the videos. Keep them coming. 👍
Cheers Steven, glad to hear your exhaust has worked out nicely!
Green tartan in the middle section of the seats would suit your car perfectly!
i got aftermarket back boxes but not sure which ones...and also KN air induction kit and mine sound nice and growling
Hi Lee. Just by way of an alternative I run my C2 with Direnza tubular manifolds and the Top Gear “Loud” backboxes. For myself I love the sound, a real “BWAAAARK” under full throttle but no drone while cruising. I definitely concur with your observation as regards being MUCH more free reving too.
One thing you may want to consider for more sound is to add in some sport cats to your Dansk boxes. I’m told that these (Especially the 63mm tube ones) add a lot of volume and might be just what you need to up the noise level if you feel the current boxes are a bit sedate.
Really sad I missed your Cobham meet-up. I’m afraid mine was in having the Öhlins fitted (It was worth it!)
Not heard of Direnza, will take a look at them! You'll be more than welcome to the next Fried Eggs meet-up too!
Would really recommend Cargraphic super sound. Little loud for some tracks, but wonderful growl...
Agree, you can better bring out the flat 6 note. I got a carnewal GT exhaust on my cayman last week. It is amazing!
Carnewal… will take a look!
Hi Lee, maybe look at putting some semi solid engine mounts onto Irish. They give better throttle response, a more controlled and connected feeling through the corners as well as giving more engine noise in the cabin. I have the RSS mounts on my 997 and love them, it gives you the sense of more noise without any worries about track days!
Absolutely will look at this, for the reasons you've rightly pointed out. The list of jobs is endless isn't it!
A little off exhaust topic. Since you have mentioned you track your 996. I am wondering if the IMS has been done on your 996. Also, any performance upgrade has been done like suspension, brakes, cooling, etc. Thanks.
i have the original Porsche 996 fold exhaust, which you can open and close. maximum sound and about 109 db. all officially approved. maybe you have to look for that in the uk. costs a lot, but there are other aftermarket suppliers. Some do prepare to their regular exhausts an additional pipe, which is almost same like the fold exhausts. Not that loud, but better than nothing.
Great 996! I upgraded my last 996 with the sport (louder) version from Cargraphic. Sound was just similar to „Klappenauspuff“ from Porsche - but a bit louder.
After Cayenne, next Porsche will be a 996 again. Thought about the 4S or 996 3,4 again. Pro 3,4: I like the puristic style. And I am thinking about deleting the lower front console like in the 996 GT3 - looks great and saves weight.
Have fun!
Andreas /PFF.de
Thanks Andreas! Will look into the Cargraphic option. Hope to hear about you in a 996 again soon.
@@9WERKSTV Meanwhile got a 996 again (3,4). Got same Dansk like you and just bought the (normal) 200 cell sport cats from topgear UK. Read a lot positive comments about this combination at PFF.de
what about a valvetronic exhaust? close the valve when you go for the track inspection and then open it up when you get on track :)
Hello from San Antonio Tx! My exhaust set up is Fabspeed super cup exhaust with Headers and sport cats! Epic sound. My recommendation. Great videos.
Nice! Have you had a db reading of the system at all?
Unfortunately it’s over the decibel level in the UK. It’s over 110dc. At full blast. The super cup is the most aggressive. The do have the max flow though. I did like the comment earlier if you add sport cats the sound will be louder. Also your car is epic! Love the ducktail and the color! Keep up the good work!
@@javiermgon Thanks indeed for the kind words, Javier! 200 cell cats might be the way to go.
That Nine Eleven Guy ruclips.net/video/MvNYShgxpS4/видео.html
That Nine Eleven Guy I finally added a video on RUclips. Example of the exhaust
The Dansk 96.300SEXP that is fitted to my 996 sounds louder and sportier, and I fell it gives a improved throttle response
Always a tricky subject. I have a 997 with sports exhausts and I really like being able to swap modes. However after the silencers have split, I wondered about fitting a pair of dansk sport silencers. Was told the noise was nicer and cleaner than standard buy potebtially quieter.
On track I am always close to the 99 dB limit measure.... Which I also find a bit odd.
I have the Dansk super sounds on mine (have comparison videos on my profile like you've done)
What I would say though is keep an eye on your flexi joints as both sides on mine lasted less than a year and it seems a common theme on the forums too ;-)
Yes, I've read that - scary! Will have a look at your vids, thank you.
I have the Topgear loud sports exhaust on my 996. I love it. There is a video on my channel. When I bought my 996 I thought it was stock, but it apparently wasn't. Love the new way louder top gear exhaust!
I have the topgear super sound exhaust on my 996 c2 cab. This will give you the extra drama you are looking for, but you may have to sacrifice some of the more noise restrictive track days, I would think. Try contacting Alex at Topgear Bridport to see if he can guide you towards one of their products that might suit your needs re sound and track day compliance...
@@jezbrown8247 Thank you, I'll have a chat with them.
How about the dansk system with the valve that switches between loud and muffled?
Thanks, will look into that, along with all the other options!
Hi, I've just temp repaired my 996 back boxes so i can decide on replacements, my current choice is the cargraphic sport offering. Just wondered what your thoughts are.???
Nice! A few people have mentioned Cargraphic, truth be told I don't know a great deal about them, other than to say I've heard of them. I'll investigate.
I can notice with better deep throaty sound! Great 👍🏻
The best sound to me is the OEM Eisenmann sports exhaust with various flap setting.
They open up at 50km/h and sounds great and roars like it should do.
Mine came equipped originally 👍
...only draw back is the price!
Autsch 😩
My previous 911 had this fitted and sounded GLORIOUS. I miss it dearly.
@@9WERKSTV I'm on my second 997 so have no firsthand 996 experience, but I'm also an advocate for OEM! My 997.2 T4S came with standard exhaust. I had to have some engine work done under warranty which necessitated the exhaust system removal, so with the labour covered and 10% PCGB discount, I upgraded to the PSE - it still wasn't cheap! It didn't sound much different inside the car on or off. However, I was at a Goodwood track day with it (a charity day with all sorts of more exotic cars than mine), and when I came into the paddock, there was a guy standing in "my" garage. I could see he wanted to talk to me. He had popped in on his way to golf to see what was happening as he did often. He wanted to say that of all the cars he had observed in that session, mine sounded the best (from the pit wall). He told me he'd had a string of G-series 911s but was now in an F12! I thought it was high praise. I know there are plenty of exhaust companies out there, but we buy Porsches for all the amazing engineering and handling characteristics, so why don't trust them to make a good sports exhaust? I'm fortunate to drive a 997.1 GT3 CS now (I met you briefly at Castle Coombe last year) and that's on another level noise-wise - 103 dB to be precise! I hope you find a solution with which you're happy soon.
Hardly any difference with the dansk, I have the dansk , stainless manifolds make a big difference and iv had the gundo hacked , linked with a fabspeed cold air intake , sounds amazing and no drone 👍👍
Superb, thanks for the info. Might look at the Gundo hack.
I have Eisenmann system with remote flap,best of both worlds really,but not cheap.
Tops!
i ordered the fabspeed muffler delete for my 996.. regret it instantly taking them off soon. on idle it sounds nice but thats where it ends it sounds a lot like some shoddy motorbike and is too loud for cars following. at times it sounds ok but more often then not it osunds like a bike. havent found the right exhaust. maybe the porsche sports exhaust system is the right thing to buy
I have the dansk too on my c4s, it's perfect for me as theres no drone under 3000 4000 rmp and the sound kicks in after 4000rmp. PS, mine one is pretty loud!
Appreciate the feedback on your system, did the sound develop over time once the boxes are broken in, so to speak?
@m m Thanks for the feedback.
Excellent channel, keep it up 👍
It's been a while since these were fitted and think that an alternative to replace them with a louder version could be to go for full set of headers and the very restrictive original cats. I am considering to replace the cats on my car but they are quite pricey looking at the dansk (£1,600), but I think you get what you pay for also.
Thank you! the Dansk Sport back boxes are still on my car but I'm still non-plussed by the sound, they will be replaced later this year for sure.
I’ve got milltek on mine , it’s sounds excellent when accelerating but it’s quiet on a cruise .
Think my next mod will be top gear 200 cell cats , should free up a few horses and add a bit to the sound .
Have you done the air box mod on the car ?, it’s supposed to improve the sound quite a bit
the airbox does nothing.
Nothing to the air box yet, might look at that down the line.
pokiou
What do you mean ?
No extra power or no extra sound ?
@@Carrera-gp9od The factory air box is very effective. Changing the panel filter actually doesnt help at all.. the biggest gain in power to the M96 is from the cat's swap the cats out for 200c or no cats and you will see the car is alot better. Even changing the intake does nothing in power. All the power qoutes people say are at the engine which equates to about nothing at the wheels... think of it this way. The 996 makes 300hp at the crank/engine... thats about 260hp at the wheels... :(
pokiou
I know all this mate , I wasn’t referring to any power gains , there is a very cheap mod you can do to make it sound better .
You block of the resonator on the air box don’t need to change the filter .
No increase in power but definite improvement in sound quality .
It’s a very popular mod ,many guys have done it on 911uk forum
Your flexi sections with likely rot away after 3 or 4 years.....did on my 997 (just brought replacement TopGear)..I'm sure you've seen the threads on 911UK ?
I have heard this… luckily mine won't be staying on long enough for that to be an issue here.
From experience of exhausts on other cars they need a bit of running in and the note changes and gets raspier. See how it goes and if you dont like them they will sell on quite easily
Appreciate the insight. I can't change straight away with other financial commitments coming up, so the Dansk system has a stay of execution… for now.
I'd be gutted if that was the result. Drill bigger holes in the baffles of the Dansk! 😆
What was the other type of muffler you used?
Milltek
@@9WERKSTV I will check them out. Looking for the right 996 cans
I am using the FVD Sport exhaust, which sounds really nice, a bit louder than stock, but still not very loud. I don't hear much more from inside the car, but with the windows cracked open, the tone is much nicer. I might go a little louder next time. I live in Germany, so I have to find a TüV approved set.
You might also try to replace some intake bits if you want to increase the volume a bit. I have the orange cap mod (topspeedauto.com/porsche-996-997-carrera-c2-c4-non-turbo-upgrade-air-intake-box-hose-kit-in-various-colors/) and a replacement airbox-to-manifold tube, the Schubert Soundschnorchel (www.sft.cc/14_porsche_soundsysteme.html). These also improve the sound, although I am not sure if I won or lost a few HP, so YMMV.
This is excellent info, thanks so much!
Waiting for your new aftermarket wheels?
As the GT3 wheels are knackered, I'll let them take the hit over winter and get new wheels ready for spring. First day of sunshine, new rollers will be on!
I love having the kids in the back seats listening to music. No way can you get me to make my car louder!
Had the Porsche oem sporrs exhaust fitted 2 years ago, I still had the original one on from 2001 ! I chose it because I couldn't make up my mind on any other
Just do the hack to that muffler you know have. Of course use stainless pipes and get a good shop to do the work. It will give you the sound you want. Dont bother getting entirely knew mufflers (back boxes). 650 plus the labor.... how much to have the ones you have modified. I bet about half and it will get you what you want.
So I hope you are doing a CAT delete?
The catalytic elements have likely turned into potatoes. Replace with high flow cats, something like the X pipe from Design911. This should add some sound as well.
They just sound raspier to me in the video.
2 inch gundo hack on standard mufflers, can't beat the sound and no resonating.
Will look into it!
Contrary to popular belief it is easier than one would think for a 996 to suffer from a reduction in horsepower while in pursuit of sound quality (even when using some of the popular brand names). As quiet as it’s kept its hard to beat the anemic sounding stock boxes from a free flowing hp perspective. Surprisingly little to no hp reduction has been shown when using cheap Chinese Ebay full throated boxes (go figure).
In this case, other than satisfying an MOT requirement the sound chamber is underwhelming better luck next time
I don't mind suffering the loss of a few hp in the name of noise… one day our cars will be silent, I want that tone in my ears while it's still acceptable!
Keep them and add 100-cell sport cats from Design911. If still not happy add new stainless steel headers.
I hear ya, my issue is I'm having to invest more into perfecting the sound when there are other mufflers out there which do a good enough job as-is.
That Nine Eleven Guy yes, but eventually you will appreciate the freer-flowing exhaust and engine responsiveness such a sport-cat will give you, besides the sport cat is probably also going to give you the sound you’re looking for, and lower emissions.
@@Nord_Mann Thanks!
sports cats will give 25% more volume...... Carnewal
Should of gone Tubi :) ;) check out the sound of mine.
Will take a look!
I've ran Dansk Sports silencers with standard Cats and I thought they sounded great up until the day the flexi snapped. When they were removed, I found out why at 5yrs old they sounded great... The inners had turned the cans into maracas!
Checkout my vids for the new setup - Milltek Cup silencers and Eurocupgt 200cell Cats 😎🤟🏼 @back2burton
Ah, no! Cheers for the link, will take a look.
Same here. The flexi snapped as well
Ive got the dansk super sounds on mine but with the design tek 200 cell cats and x pipe. Its gotten louder as times gone on, but its waaaay beter than the silencer bypass i bought it with! I've got the design tek manifolds to go on next but apparently the drivers side one isnt such a great fit, we'll see.ruclips.net/video/t_Z0AeFp4zk/видео.html
My 996 exhaust has the Gundo hack done to it, sounds louder than stock and pretty "meaty". Just uploaded a clip: ruclips.net/video/Wo3jSv_bBL8/видео.html
The video is 9:11 long
Hardly any difference in sound TBH
ruclips.net/video/S8Pu6BMgqAs/видео.html for when your ims bearing needs fixing
Gotta say, these always sounded best for me (on pc speakers)
ruclips.net/video/9FMn8tiUYNU/видео.html
Next thing to aircooled