Air Intake Comparison Test - 8th Gen Civic Si - K20Z3
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- Опубликовано: 9 сен 2024
- Tuning by Nick
Toronto, Ontario, Canada
nick@tuningbynick.com
Dynojet 224xLC Load Control Dyno Tuning
2008 Honda Civic Si Project Car
K20Z3 Internally Stock Engine
K-Tuned 3.5" Cold Air Intake
K-Tuned Stainless Steel Header
K-Tuned 3" Cat Back Exhaust
Hondata Flashpro
It don’t matter how old this Si, it’s a beautiful masterpiece
Amen. Praise to the Honda Gods. 🙏
Glad YOU think that brother😂
Love 8th gen z3 contents....keep them coming!!!
Comparison between aftermarket (3)pulley to oem be nice.
used to have this exact car, no one can tell me its not one of the best sounding cars ever, even with the standard exhaust
My z3 has been terrorizing my city for years. Best sounding Honda hands down
I prefer my old 8th gen but my dad's 9th gen growls and is way faster than mine with the intake. Mine was stock, lost it in a wreck 2 weeks ago. I think the interior of the 8th gen is way better.
I traded in my 2004 Mazda RX8 for an 06 Si. I’ve owned a Lexus ISF, a 08 EVO MR, and a 17 BMW 340i mperformance, not to mention my first car a 98 integra GSR and a 2000 Prelude that I put a Jackson Racing supercharger on. The Civic Si was my favourite of them all. I’m now returning to my roots and I’m looking into a new Civic Type R.
What made the civic a better car to drive for you?
@@lindaover9764 unless your absolutely reckless the car won’t kill you. I enjoy the feeling of being able to drive a car to its full potential and limits. Now that I’m older and have had my share of cars I’ve finally realized what it is that turns me on with cars. It’s all the cliche things you here by good reviewers. The sound, the way it shifts gears the brakes, how the steering wheel feels in your hands. The Civic checked all the boxes for me. Luxury cars are great but knowing that there is a superior driving experience available at a regular person price is super appealing to me.
I’ve had 2 06 evos. Lexus. 4 Mercedes 4 EFs. Plenty of cars. And my 2011 FG2 was my favorite. I recently bought a 07 FA5 cause I was wanting another 8th gen and I’m convinced that is the best gen civic ever.
Funny how I did the same testing years ago on my 8th gen and the results were pretty much the exact same. Did the same when I swapped it to k24 and was almost identical results except it lost about 10hp with the 3 inch. Overall the best combination that I found was 4 inch cold air with a transition to 3.5 about 6 from the throttle body, with that setup it gained 13hp over just the straight 3.5 inch Cai. That was with the 2.4 though on a 2 liter the gains were marginal. I'm sure with cams and a bigger throttle body that intake would have worked better. Also on the throttle body side I found that the j35 made the same hp as the zdx throttle body with stock cams made 220, once I swapped in some drag cartel 2.2 that's when the zdx had the advantage made 242. On the 2.4 however the zdx along with the port matched rbc was the ideal setup for max power totally stock it made 230 with 188tq with drag cartel elite pro cams stock block it made 257 on pump, 267 on e85 and 303 on m5.
Nice results - Thanks for sharing
Awesome read.
Finally some good 8th Gen content! Great comparison video Nick. Looking forward to the throttle body comparison
Hondata says otherwise.
Thanks Nick 10/10 👍🏻👍🏻
Subbed for the 8th gen dyno stuff!!!
I think you should have ran the AEM with a clean filter, that looks filthy. Also the K&N has the heat shield and the air duct to blow some cooler air.
So what you’re saying is.... I should turn my short-ram back into a CAI when I see you for a fresh time this spring... Got it! 👍 Great video, Nick!
Love to finally see REAL results on this.
I lost my K20Z1 in approx 2 mins of a Florida rainstorm out of nowhere to Hydrolock with a Injen Threw Bumper CAI(with a AEM Dryflow filter cover...)on my DC5.
Now I run a Short ram for basically safety and my IAT's are now +50° delta whereas with the true cold air intake id be somewhere in the +10° to +20° ambient range and it is surprisingly noticeable
Sorry to hear, you must have been submerge your cold air intake into the water to hydrolock otherwise if water just pour into your filter then you should be fine especially you have the AEM dryflow filter cover. Take precaution and drive slow when it's heavy rain and avoid big puddle or flooded area. or best if carry an extra cone filter and when it's heavy rain remove the coupler connection from the throttle body and put the filter in there for temporarily driving. Anyways best of luck.
@@paxsi2gdsm yep it was within 3 minutes. Driving on a beachfront highway in Delray Beach Florida, skies went from Clear to Gail force winds and rains and visibility was maybe 5 feet. I tried to pull off the road asap and the entire road was covered in a few inches of water, I shut the car off and coasted into a hotel parking lot, dropped the oil pan, pulled plugs, etc. Then new oil and it actually drove another 500 miles before blowing the rod out of the block and upper pan housing area. Honda makes a great product haha
Picking one up tomorrow. First time back into the Honda game in a long while. Can't wait
Great video. Thx for showing intake temp and difference in pipe size...
Another great video Nick! You've answered questions that I've been trying to find the answers to for years. I found it interesting that when you paired your car with the ktuned 3.5 short ram it made the exact same power as mine considering we have the exact same bolt ons except my car has the fullrace exhaust, invidia header, rick specd intensity 3.5 short ram, and running your tune. Let me know if you want me to bring the hybrid racing cold air intake to compare with the ktuned cold air. I know a lot of Honda guys wanted to know if there is actually a difference.
Awesome, in-depth video showing some real test results and not just talk. Just wish you had tested the K&N one
Yes !! Continue this series !!!
Excellent video! i can't wait for the tb comparison. Thank you Nick.
This is a really informative videos and base on your testing result, we should all ditch our short ram intake for a cold air intake. However, i find that installing a catless header will make more noticeable difference at mid range power when you driving the car. The power increase from going short ram to cold air intake is not justifying for the price difference for a Naturally aspirated engine like the k20z3. Regardless, for daily driving, i would rarely accelerate to 5k rpm and if you want to really accelerate fast with this car you have to go pass 6k rpm for the second stage vtec to kick in order to feel something. With the k20 engine, you either go all out or you just coast with the traffic. Installing a cold air intake instead of short ram while give you a noticeable gain from 4km rpm to 5k rpm will not matter if you are up against a turbo car in the same class like GTI or WRX.
It's not just about power the car will drive better and use less fuel with the lower intake air temps.
science based information. good stuff!
Interesting to see how the length of the runner affects the mid range
Please make experiments with heat shielding coats for intake. Shield as many elements as you can to achieve the longest possible "cold channel" for air. Results are great!
Thanks for taking the time to test!
not gonna lie the intake sticking outside the engine bay don't look that bad 🤣 Nice comparison video Nick
Saw that velocity stack style filter. Would have loved to see that vs the filter.
Im with this! 💯
I agree as well.
this should definitely be in the next video.
I wouldn't completely throw aside the K&N intake. Each Si owner chooses an intake according to his or her setup. The K&N is convenient and good enough for a reflash "tune" if you don't track or street race or want to custom tune beyond a 2.5in. intake.
So basically, stock airbox is best, other than a dedicated CAI..
Really well explained which one is which not many dynos do that in details ! Good job
Thanks!
Most excellent video, very helpful for me shopping for whatever the best CAI is these days
I’m glad you’re rocking with the fg2 instead of the 4 door.
Looks like I'm now in the market for a 3.5 CAI for my car!
Hybrid Racing CAI is the best 3.5"
@@SkyBlue-uh4pi no it isn’t lmao. Same shit as a Ktuned. IMO ktuned is better because I can switch it to a Short ram when need be in rain. That bypass shit that hybrid advertises doesn’t help a thing. Performance wise, they all make the SAME power as long as the CAI is 3.5”
@@beatzzc1t still the best 3.5" available on market in many people's opinion : )
@@SkyBlue-uh4pi so I’m in the market. Is there any solid info on best for power? I don’t daily my car and I’m in the mood to modify it
@@vtecbanger3180 check out hardmotion.com
they have information of how to mod the 8th gen Civic Si : )
Could of made a cheap "ebay intake" with the spare piping as a comparison, good videos man keep it up! 💯
loving the 8th gen vids! keep em up
Stock airbox with K&N drop in filter as a 'baseline' would have been interesting to see, if only in comparison..
hybrid racing has the best intake
I have theirs but I'm curious, what makes theirs the best?
It’s the same thing lmao. If the CAI is 3.5” they all do the same shit.
@@beatzzc1tthat’s wat I was thinking, they all have very similar intake systems
This was great info thanks I jus got a AEM intake for free and now I jus wanna throw it away 🤣🤣🤣 I knew it was bad but I didn’t think it was that bad
Cold air intake is a way to go but it will fuck that motor once water gets in in it
Cool experiment. Great to know 👍
That last test was wild haha
Very interesting, new subscriber !
Awesome vid man!
Nice video. I have the stock airbox with a drop kn and the Mishimoto Intake hose.
@mecpello787 notice and difference with the Mishimoto induction hose?
Go test the K&N. It has a heat shield and uses the stock snorkel. I bet it outperforms the ktuned 3.5in short ram
Was gonna say the same. The k&n intake is solid and I wish he tested
No just no lol. Heat shield doesn’t actually deflect heat lol it traps it. And ktuned short ram faces our headlight so it gets “cooler” air. K&N legit faces our header, and other components that put out way to much heat.
@@beatzzc1t so you check out his follow up vid? for a SRI the K&N wasn't as bad as everyone made it sound.
Love those comparision!
U shuda did the knn instead of the aem for sure the knn is good for short ram has velocity stack. Good vid
Wasnt the test car tuned using the K-tuned 3.5" cold air set-up? Wouldnt that automatically give that intake the advantage in this comparison? In order for the test to be accurate, wouldnt the car have to be retuned after each intake change? I really dont know; Im just asking. Im not saying that I think that the other intakes would outperform the 3.5" cold air setup, but if the car was tuned using a short ram intake, then you switched to the 3.5" cold air setup without retuning, would the gains be as great?
I'm wondering too.Vtc tune can change the results.
Yes you could clearly see his datalog went rich in the areas he lost power and if it had been tuned out it probably would have picked back up some but the fact that it went rich in those areas indicates a loss of power because of less air
Love the content 👍
Nice comparison but disappointed that you couldn't do the 3.5 inch straight cai versus the 3inch to 3.5 cai. Would have like to see the comparison since ktuned sell both intakes in that configuration.
you can expect a 3" CAI will be making a little bit less power when compared to the 3.5" version, right?
@@SkyBlue-uh4pi yeah but it would awesome to see it on the dyno.
Great job, thank you! 👍👍👍💪💪💪🙂🙂🙂
They say the less bend on the intake piping the better 🤔
What I would like to see is how much difference it makes on a turbo car,that's running a upgraded intercooler
Wasn't the K&N intake suppose to be used in conjunction with the stock snorkel? Would think that's better than the aem one.
I left the stock snorkel on my mugen with afe intake (k&n) style.
new videos shows ur right poggers
@@IsaacPoopsAlot ayoo i follow you on tiktok
Nick, thank you for this informative video!
I would like to ask you couple questions.
1. Does the valve cover breather filter works well with a boosted 8th gen?
2. What size is that black cap you used on the K-Tuned intake pipe and where did you get it?
Thank you
How does the stock box compare with a drop in intake
I'm looking forward for the throttle body one. I want to up mine to a 72 or 74mm.
Why didn’t you test the K&N?
Damn, I used to run an AEM SRI on my old fg2 :(
Love my FA5
I would like to see if water-meth would make a difference,on a stock engine with intake
Did you leave it on stock tune when testing ?
yes I agree
Was the length of the long 3in intake similar to the k-tuned 3.5in? If they are no the same, then it would be interesting to see what effect that would make to have the 3.5in be longer.
I would love to see a 80mm throttle from Maxbore in you next video comparison if you could get your hands on one.
Thanks for the video comparisons!
Nah, for the less than 10% gain with any of them, compare against stock!
Wonder would putting a velocity stack change anything?
civic 8 gens air intake dyno tuned tuneup i-vtec
Je comprends jamais pourquoi il y a 2 courbes ensuite 4 courbes etc. On ne sait pas quelle courbe correspond à l'admission installée
I'm using a K&N SRI in my FA5 SI...now I'm just wondering if the stock air box with K&N filter would perform better. Do you think the Stock one with K&N filter would perform like CAI?
I think the K&N would perform better then the stock box even with a drop in filter
which intake is better for a k24z7 with muffler skunk2 3 inch donwpipe skun2 hondata rbc and thother zdx
I would be interested to see if when you open up the intake plenum opening more if this messes with the resonance. Would you be willing to repeat the Ktuned 3.5 cold air and SRI test at this time?
I wish I could have you tune my car. I’ve taken advantage of in the past. I have the hybrid intake for two years . Still in the box . Afraid to install it with out tune.
I can remotely tune your car for you so that you can finally get the benefits of that intake - If youre interested in that - Shoot me an email - nick@tuningbynick.com
A little more knowledge on intake systems would of been better. My short ram setup will beat cold air setups. You live in Ontario canada with lower temperatures than me here in Dallas, TX. I just ran a datalog myself. With the car warmed up from being parked it was at 80 F. When I did just a mere 2nd to 3rd pull. It cooled itself back down to 77 F. And the ambient temps are in the mid 60's on that day. It's best to get the benefits of short ram and cold air. So I have ram induction that goes to my short ram but I still keep the filter in an open high pressure zone so it doesn't get seen as a "Cold air" by the engine. That's why mod for mod my K20 has beaten others and built more mid range torque than others.
Hi, can you show me how you do your cold air intake version. I would like to know so I can do for mine too thanks.
That’s awesome! Im out in colorado so i get worst of both worlds temp wise
i dont understand why people don't have shops make them custom cold air intakes for their cars.... seems like the cheapest way to make power.
Vstack vs filter next please!
You didn't test the hybrid cold air intake
Do you know if i can use the hydrid racing cold air intake without hondata tune? Basically i want to know if i can use that hybrid racing CAI with the stock tune on a 8th gen civic si
How did the k&n typhoon intake do?
what would you recommend after an intake and exhaust ?
Kpro
@@lindaover9764 LOL
Def the kpro and a race header
I like the hybrid silicone intake , no fan boy
The silicone is a good material for preventing heat transfer
Did you ever consider to swap the k24 in that car, that would be awesome to see, but I know the header clearance is the issue.
You just use a header for a k24 on civic rsx motor swaps. Problem solved
civic 8 gen air intake dyno tuned
How much power would I be making with exhaust, intake and flash pro? My car is a civic si 2007 with k24a2 engine.
Honestly, there is no way to know exactly - If you havent already, you should really have it dyno tuned, it will make a huge difference and you'll know how much it makes. Let us know if you do
Where are you located Nick?
Toronto best tuner in the city
Could you tell me is the j35 throttle body worth it for only bolt ons?
I will be making a video about that very soon
All that scientific data about power is cool and all, but what about the most important thing?
Which intake makes the the vtec crossover most audible? 🤣
You should do a pop tune
If you want it i can definitely do a pop tune video as well
@@tuningbynick yea man would be nice ktuned exhaust is always good with pop tune
are u going to do a 2 step setup
Yep - Definitely doing a 2 step video
Do you have any base maps for fbo rsx type s?
I do - Shoot me an email and we can discuss - nick@tuningbynick.com
Nick where are you located at? City wise..
I’m in Toronto, Ontario, Canada
are the AFRs affected at all?
They were slightly affected - On the least performing intakes the AFs went a bit richer because the engine isnt running as efficiently and cant use all the fuel that the better intakes allowed it to use - I can going to go into more depth on the AFs in one of the next videos
I just been hearing alot of no u don't want that long 3inch cold air intake with velocity stack filter, short 3inch 45 degree with a velocity stack filter yield most hp. Gonna be finishing my car in spring and gonna get her tuned. Maybe I can have my tuner compare it too
Can you also do this for a b18c?
i think the theory will be the same for any engine.
a 3.5" CAI will outperform any other types of intake.
@@SkyBlue-uh4pi not necessarily. Being that the k series heads flow so well due to its architecture and larger valves and vtc give it huge gains with small little modifications.
But some of us old skool guys would still like to see a comprehensive test shown for the older b series.
Theory is big dense air and big fuel. That equals a massive bang inside the combustion chamber. The colder the air. The more potent of an afr you have
Wait... so your baseline is the cold air? And they were Your first 3 runs? and they were the best? not trying to crap on your results.. Logically thinking 3 1/2” cold air would be better... but AEM and KNN both do lots of engineering and slap their name on it. So if they do 2 1/2 there’s probably a reason why? I’m assuming. I could be wrong but to test them last on (in my opinion) doesn’t do them justice... or justify their prices of what $200+
if it’s pulling the air temp off your MAF... it’s not taking temp off the intake it self. I know with my 8th gen the first couple pulls in the morning are fun and fast... but if it hot out or I’m driving for a while. if I go to take off or down shift to pass someone.. it’s a way different car! It starts reducing power the hotter it is. Like you hear the V-Tech... but don’t notice a speed and power increase. Nothing close to what it was when you first started driving it...
My assumption is it’s the engine and intake becoming heat soaked. it acts and replicates your tests... with the same intake on.. I’m still using oem with knn replacement filter. I’ve been wanting to buy cool air but can’t justify buying one for $200 so I don’t have a bone in this fight. I’m legit questioning it because I do want one if it’s a positive.
I’ve noticed right in the mornings at temp right and it’s like at 50F outside the thing just goes! It’s happy as F! It’s a different car! Like without looking at the temp outside just by the way it acts I’m like oh it must be about 50F.
What I’m getting at is Temp for some reason really affects these cars. I’m not sure if it’s compression? or the oil thinning out causing it the oil to not build the pressure to open v-tech solenoid all the way? Idk but temp matters the more heat soaked the engine and intake is in this car.
I actually believe this order of testing is actually the best way to do it. I will go more into the logic in the next video when i test the throttle bodies - But the very basic break down of the logic is - if you start with is the best flowing intake and make sure the tune is as on point as possible. Then you test another intake and it looses power, the loss of power is because the intake is more restrictive. There really is no magic to intakes, they basically need to be as efficient and restrict air as little as possible while feeding the engine the coldest air possible.
What youre describing is exactly the cause and effect of heat soak - Cold air makes more power - Your stock intake in the morning is not all heat soaked, so its sort of like you have a CAI - But as soon as the engine bay warms up it warms up the intake air and you loose the benefit of the cold air. A proper CAI always draws cooler outside air therefore doesnt become heat soaked like the stock one or a SRI - All these intakes read the air temp from the MAF which is right before the throttle body a very accurate way of reading air temp as it enters the engine.