Does an ITB AirBox Rob Power? + Big Power Gains ITBs & 3-inch Exhaust - Project BADASS2000 - EP15

[@itzzToon]

CAMSSS!!! You said it yourself, this is not a street car anymore. i smell a Touge monster in the horizon of this build, let alone a track monster. much love, congrats on 100k!!!

[@speedacademy]

WE've looked into cams and havent seen any that give big gains so we're hesitant.

[@itzzToon]

Speed Academy im pretty sure you guys are big enough to work with a big brand so that they give you guys something that will put down the power you want, i mean, if they gave/sold you something that doesn't really make a difference, it would look bad on them, it would be mutually beneficial. But of course, that would only happen in a perfect world.

[@speedacademy]

We've actually asked BC racing for cams but they weren't that interested so for the moment we're going to enjoy the car as is. We've also got a lot of other projects on the go that we have sponsor obligations for which leaves us with very little time to tinker with the S2k. :|

[@itzzToon]

Speed Academy that makes me sad.

[@thefree337]

stock cams are pretty much the best cams you can have for the F series.

[@abunaiN1]

I liked how the trunk... oh i mean the velocity stack intake arm moved by itshelf closer to the fan during the dyno pull :-)

[@speedacademy]

It was like GIMMIE, GIMMIE, GIMMIE that fresh air haha

[@MitchDenham]

YAY! New S.A. video! Happy New Year guys! :)

[@why3011]

the people making the dyno videos wear head phones to hear less the people watching the dyno videos wear head phones to hear more haha, life

[@IntegraDIY]

DONNY haha

[@kern417]

lol dude how high were you when you wrote this

[@lawrenceclaridge6401]

They maybe wearing knock sensitive headphones to detect detonation in the engine :)

[@SouthPlanObservation]

Wow, 40whp midrange is an awesome step-up for a n/a engine that size. Keep it up.

[@moustachio334]

That’s why I roll my eyes when people say the S2000 is “maxed out” from the factory. I’ve seen an S2K go from 210 to 230hp on the dyno from a K&N filter wi th a modified stock air box and header. They made about 30hp around 6000rpm.

[@misterchonger]

I love that you guys are laying on the floor wrenching on the car like us average no lift folks!

[@blu73]

well that now sounds absolutely epic, good work guys.. I still can't believe this channel only has around 100k subs, you deserve so much more!!

[@Elver_Galarga_jugo]

I hope you guys remember, you guys had a filter on the 3" tube and a filter less funnel on the 3.5" tube that may have been a contributor to the extra 6whp at the peak. also, I have a feeling much of your gains by swapping exhaust systems had more to do with going catless.

[@stamp-overstock-staring]

thank you so much for going through the time and effort to put out solid knowledge fuelled and filled content!

[@speedacademy]

Glad you like it!

[@yunclehead]

It had to be very satisfying to see such power improvements for all of the work you guys put into this car. 40 extra ponies will feel great on the track. Can't wait to see whatever else you have in mind for this project.

[@speedacademy]

Big time! We can't wait to test it out at the track and feel the gains in the butt dyno.

[@aaronp9835]

30whp is a HUGE mid range gain! You will feel that more than a few more on the top. That’s amazing! Keep it up!

[@BuildThreadsNorway]

I'm glad to see this channel doing so well.

[@andersw1152]

Great episode, amazing how much power your old exhaust held back. Berk seems to be the perfect system if you're not concerned with any kind of noise restrictions :)

[@speedacademy]

We're ready to race yours now, Anders! ;)

[@andersw1152]

lol I'll be ready to rip at Mantorp Park on April 30th!

[@Luisr777]

Speed Academy is the berk exhaust with hfc or from header back exhaust????

[@andersw1152]

It's without HFC.

[@Luisr777]

Speed Academy what gasket did you use for the headers back or was it oem ...?????

[@Vlammenzee]

Happy New Year guys, the carbon airbox looks mighty fine, well done on that. also that's a lovely exhaust sound from that muffler, the ass2000 gets better with every episode.

[@lfrancoeur]

Glad you guys picked up power and went with Berk. I can't say enough good things about Berk. I bought their bellmouth full turbo back for my SW20 MR2. When it came in the mail and I opened the box the downpipe was like a piece of artwork. I almost didn't want to put it on the car it was so beautiful. When I did put it on the car it made a huge difference also it sounded and looked amazing.

[@speedacademy]

It's great to have local manufacturers like Berk producing quality products. If only they made exhausts for different applications we'd be all over it!

[@lfrancoeur]

It really is great! Maybe the high level of quality is why they only have a handful of applications? I'd be all over it with my STi if they made an exhaust for me as well.

[@speedacademy]

Shoot them an email and see what they say! You never know, they may get into the market if they have enough interest.

[@lfrancoeur]

This is true! I may just have to :)

[@Kevin01SH]

Thanks for continuing the S2k videos! Glad to see you got your misfire sorted out, cant wait to see what this thing does on the track now.

[@chrisduncan2626]

Makes me almost wish i had bought an s2000 instead of the s550 mustang gt. This car sounds amazing

[@djsonicc]

As much as I love the S2000, the S550 GT sounds way better.

[@chrisduncan2626]

@@djsonicc they do sound good. I miss mine. Was involved in an accident. Now i have a hybrid turbo fiesta st. Like a little gokart lmao

[@robertsestito6821]

why not go full bat Shit crazy and cut the hood and build an air box/ hood scoop.

[@speedacademy]

Considered it but we may add boost on top of the ITBs and for that we need an airbox :D

[@-tr0n]

pull out the grinder and vent that radiator heat out the top and throw in a pair of cams. you know you wannnnnna. that thing should be fun, looking forward to more content guys.

[@crisray6789]

you could go with a NACA duct through the hood, which could be reused as an air inlet for a supercharger

[@-tr0n]

crisray6789 never enough NACA ducts. never enough.

[@NIcad7]

Puurrrlease don't go FI! NACA duct in the bonnet will be perfect for this set up, nice straight inlet tract to the ITB's

[@Haru-Kei]

Happy New Year! Sounds great and detailed dyno video. Great work guys!

[@Sssloth666]

deff would love to see u guys try 4 and up intakes but so see where its the best at. also nice to show somthing as small as that can make such a difference in the end game of chasing higher hp numbers

[@paulwade5853]

Just a heads up guys, even with the CEL fix on the exhaust the O2 sensors still burnout about every 2 years or so. OEM replacements are expensive, but you can get aftermarket versions for around a 1/3 of the price. Been watching this build for a while, and not to be detrimental to what you guys have done, but I think for the money you would've spent on the ITB setup, turbo/supercaharging would've been a much better bang for buck investment. I'm only running an AEM Intake, 5zigen headers and Skunk2 catless exhaust and i'm making 201whp, with no tune. The ITB's are definitely making more mid range, but bolt on supercharger kits (the Kraftwerk kit looks the business) are making and easy 350-400whp. Sorry if I'm being a bit of a Captain Hindsight, I still like the build, and appreciate the effort going into it.

[@s2kguy762]

Stock s2000s make around 210whp If u go back to when they first got their s2000 they dynoed it stock and she made 215whp

[@MyLonewolf25]

Paul Wade yes but they also have much better throttle response And it's a great supporting mod for boost especially The only thing IMO they did wrong was the air box/plenum because of it not being designed for even airflow and will bias the rear

[@paulwade5853]

Yeah now that you mention it, those figures do sound familiar. Might be due to dynapak's reading differently than a normal dyno, I dunno. I might just be screwing up my power conversions, I'm in Australia and most dyno results are in kw's. Stock S2k's make around 135-140wkw (190ish whp), after the mods I mentioned I made 150wkw (201whp). Maybe I just got a dud S2k, It was low Km (60,000km, 37,000 miles) when I got it, but it is a realy early model, March 2000. Anywho, the point I was trying to make was they could've made a lot more power a lot easier.

[@paulwade5853]

Agree with you totally on throttle response. When I first got my S2k I wanted to ITB's but after a little research I realized It's a little more involved and difficult to make big power. I think one of the faster one's with ITB's going around is the ASM s2k, dunno if it's still around, but it was making just under 300whp and they were struggling to get any more out of it.

[@MyLonewolf25]

Paul Wade diy itb Can be done sub 500 usd in total I've seen it done

[@joeykhoury7491]

I have waited so long for this

[@UndergroundTrev]

Woo hoo! Can't wait to see the next track day with this one.

[@speedacademy]

Gotta wait till summer :( Winter is such a buzz kill.

[@wololo10]

You guys are the best in the world, thanks for the channel

[@speedacademy]

Wow thanks for the great praise!

[@larsjrgensen5975]

I am running stock airbox with the original choke (less then 2.25 inch) to muffle sound on my old 2.0 Saab turbo, its also around 215hp at the wheels. 3 Inch intake together with that plenum should be enough for well over 300hp. I know mine is turbo, but on the sucking side of the turbo, my car still needs to suck the same amount of air as yours, to make the same power.

[@zinoabreu3029]

She's backkkkkkkkkkkkkk, man I missed this car, and anywork being done to it! The ass2000 brought me to speed academy and I've been a fan since

[@speedacademy]

Well we're hoping to get it out a few times in the summer since it's been neglected quite a bit.

[@itsjustWebbie]

I think you guys should fab up a custom intake scoop since you already had to cut the hood. I think it would be a great benefit on the track. IMO.

[@owixomen]

You guys should work on some more back yard aero. sorta like the frs but more extensive? Great show keep it up.

[@aw11man26]

I would have never thought a 3 inch exhaust on a 2 liter n/a engine would work. I would have bet it would be too big. Impressive

[@dverdin55]

hey guys! I'm glad you guys went 3 inch header back but there is a problem you might run into at the track. as you can tell, the berk exhaust is crazy loud. there will be a good chance that it will exceed certain tracks noise level restrictions. It's a common issue with the berk system. you may want to look into adding a vibrant 3 inch resonator. good luck with the build! we need MOAR s2000 videos!!!

[@speedacademy]

Thankfully we have no noise restrictions at our local track but we may do a resonator if its too loud for our liking, thanks!

[@Sithlord343]

Nice video again guys . I would advice a vented hood ,really helps to keep heat out of the enginebay .

[@speedacademy]

WE're thinking about it, just need to find the time!

[@testing316]

always loving the s2k vids! thx

[@rolandotillit2867]

The one thing that will really open up the engine is the cam timing, you can really get some more peak power with cam gears. You don't even need cams, just offset woodruff key +2 on the intake will give you 7 extra hp.

[@speedacademy]

Hmm good to know, we may try that.

[@MrRubbish05]

After watching this video, it makes me miss my old ap1!

[@coryholbrook4643]

Did you say that carbon intake box was custom? You've already cut the underside hood structure to make room for this box, you could have an open top box that's made to seal to the hood and then cut the hood and install louvers/ scoop/ naca duct, etc to get back all the power lost with the box or closed hood. Make it the shape of a large factory style air filter and top the box with that and get filtered cool air from the hood. You're already taking it off the street so why not? Pretty easy stuff really

[@ewatford]

If you guys like the Berk...check out Origin Fabrication. Easily the prettiest S2000 exhaust period (IMO).

[@rramos7488]

I wonder if there is any way to route individual intake tubes to each throttle body some how like a 4-1 collector style. i think that would make a difference. i dont know how scientifically accurate this would be but, does the intake cover starve the cylinders towards the rear of the of the engine?

[@Tommikegetitright101i]

That exhaust sounds amazing!

[@MrWuWatt]

Wow 100,000+ SUBS AWESOME!!!!!!!!!!!!!!!!!!! ON THE ROAD TO 1,000,000!!!!!!!!!!!!!!!!!

[@Berry29tm]

it would have been nice to show us the result with open hood and new exhaust compared to final tune just to see the full potential (even though it is not good when running with hot air)! anyway, awesome job guys!! keep it up!

[@lucaspetersmann9195]

is the change in sound due to the vtec switching the camprofile at 4:58?

[@speedacademy]

Yes sir, that's VTEC kicking in!

[@HPMvdBerg]

This ASS2000 is getting more and more amazing! Maby do some weight removal in the winter? With before and after weight, would be cool! BecauseRaceCar!

[@speedacademy]

There's really not much left in the interior to remove, we'd have to start gutting the chassis.

[@HPMvdBerg]

More front downforce then? Lacked a bit front grip right? Just thinking out loud!

[@kschong4163]

i am curious to see if the itb box makes a flatter torque cruve than ipen itb or power band is shifted to lower rpm range with box on.

[@NewtonInDaHouseYo]

What about a short ram air intake right out of the hood? Those long intake hoses look like they cause a big oressure drop.

[@sammyalx6978]

On the latest video I actually wondered if 4" would be a better diameter for the intake. I'd love to see you guys prove that it can do even better than the 3.5"

[@speedacademy]

In the works...

[@HassanEido1]

Speed Academy please make the airbox inlet itself into a 4 inch.. the cf inlet is a restriction not just the tubing

[@KoiTimeUSA]

welp i did it. got my pfab elt gtx3076 currently have berk hfc 70mm with 70 invidia q300 dual exhuast.. 430whp at 11psi stock block

[@tedradzwill]

Great video, guys.

[@nathanyoung3078]

Ever thought about cutting vents into the hood to try and dissipate some of that heat in the engine bay?

[@speedacademy]

WE most certainly did but after contemplating and figuring that we'd run the air box cutting holes in the hood didnt make much sense.

[@nathanyoung3078]

I was talking more along the lines of venting hot air out, and not sucking cold air in. But I definitely see where you're coming from.

[@g-mane7497]

looking great guys!!!!! AWESOME!!!

[@RobertKohut]

No doubt cats restrict flow and power a lot!! Improving intake flow must always be accompanied by a free flow exhaust and that really means deleting the cats. Great video! Car sounds nice!!

[@SupaNinjaTurtle1]

Berk is the way to go!!! Love that exhaust. Also since hot air is a power robber from the itbs, would a vented hood be a solution?

[@speedacademy]

No because all the vent does it release some of the hot air but doesnt feed cold air to the ITBs

[@edgarsve]

So a ram air intake is a must have now. I wish i could afford a build like that.

[@swandonovan]

gains on the first run were probably from deleting the cat, no need for a 3" exhaust on a small displacement NA car

[@johnss2k434]

Awesome video guys!

[@iivv_nn]

did you guys use a thermal shield intake manifold gasket?

[@alfredolozano695]

I love me some fresh Speed academy content !!!!

[@Garagetopics]

Not street car capable anymore makes me sad, but more horsepower in the name of going fast is a-okay! Happy new years!

[@blakes2k]

not a street car if you're afraid of driving with a test pipe.

[@speedacademy]

It's still a street car but not legally so we cant call it that :)

[@e30tim]

Congrats on 100k

[@andrewkerman5347]

I feel as though with air rushing through the engine bay at speed, having the hood closed in a shop on the dyno isn't very realistic to the IATs you would see out on the track. BTW That induction noise is intoxicating, awesome car guys!

[@speedacademy]

True, so you can imagine the losses with open ITBs at the track would be even greater!

[@andrewkerman5347]

You guys should test the iat difference with and without the box on the track and how it compares to the numbers you see on the dyno. I feel as though the air flow would be a lot greater in the real world than on the dyno from what looks like a big 48" fan. I have a similar looking one for my dyno and it doesn't blow very fast, certainly not 50-120mph like the you would see flying around the track.

[@stevecook6136]

With a big fan, it's fairly close.

[@nickcook7408]

No dyno has enough fan to simulate the airflow across the whole car at speed. Open hood is only to stop overheating. Fit a thermocouple in your engine bay and go test it ;)

[@davidbarragan5810]

100k sub congrats guy

[@bergi85]

I have the "catted" version of that exhaust. I like it.

[@speedacademy]

We wanted the cat version but felt like we needed to test the straight pipe version so one day we may weld a cat in

[@jordanalexander3117]

Can someone explain why you wouldn’t go with a different intake that just breathes more over spending 3k+ to get get jenvey ITBs but then have boxes and intake piping made to have them not suck hot air in which at that point is doing the exact same thing as an upgraded intake manifold but cost less? Not trashing anything, I’ve just been wanting to put ITBs on my engine but trying to understand the cost to power ratio cause you can’t just slap on ITBs not unless you don’t care about actually utilizing them for their full potential. So I’m wanting to know if it’s actually worth going down that route or not

[@ThmsPtrsn]

Did you guys think of piecing your own exhaust together? Would that have been cheaper or was the one you purchased just for more ease of use? Also sounds amazing!

[@speedacademy]

We've built our own exhaust systems in the past and the time and effort needed always exceeds the costs of a new system.

[@djsonicc]

I think it's just better to go with supercharger, unless it has different class restriction (i.e. carries a bigger point penalty than ITBs) in whatever organization you compete. It comes out cheaper, makes more power, less finnicky with altitude changes, and ton easier to tune.

[@wdupcake]

Kinda hard to tell from the video audio, did the airbox significantly reduce those beautiful itb noises in comparison to the open throttle setup? I'm tempted to make an airbox for my itbs but dont want to lose the jizz worthy acoustics.

[@speedacademy]

Nope, they still sound loud and GLORIOUS!

[@TJPDmember]

i hope you know that a smoot steel pipe flow way more than those cloth dryer hoses?? there is a lot of power still hidden there :)

[@speedacademy]

Yes but not that much more. Pro Race cars run that brake duct hose so we trust they know what they're doing.

[@kjwong4730]

I have an s2000 that requires some body work, more specifically a carbon fiber front splitter install and some rear over fenders. Does anyone have any recommendations of where I can go to get these done professionally? I would do it myself but I just don't have the proper tools.

[@moustachio334]

4 years late but J’s Racing solved the air velocity problem with their carbon intake if you google their ITB S2000. Also that car makes 320 crank hp

[@franciscocruz6726]

Link to purchase the test pipe and exhaust PLEASE!!!!

[@andywiththen]

A proper high flow cat will be barely restrictive if at all. Maybe a couple horsepower lost but still least it's still road legal.

[@xxbeastt28xx]

Loving this build! But what I really want to know is what's going on with that Miata in the back? All smiles!

[@speedacademy]

That's our friend John's car. Ken was working on it but it's gone now.

[@rudy102r2]

What about exhaust manifold? When you plan to replaced header?

[@speedacademy]

Tough to improve on the stock header on this car, but we are considering the Ballade header.

[@s2000Macedonia]

Speed Academy. i dont remember that u did a header..but now thats answered... can you please see when is the vtec crossover? i wanted to see if the midrange gain is maybe from the vtec lobe..ask sasha for the rpm where it crosses..just wondering

[@s2000Macedonia]

i think that all bets are off when you go to itb's with the header..

[@cidfacetious3722]

Piotr Rutecki very few headers improve the the stock s2 and the ones that do are very expensive

[@rudy102r2]

Jay Gunter, Yes I know. But I remember when I fitted very expensive HKS 4-1 manifold to 3SGE ALTEZZA I noticed huge difference compare to stock. The best mod I ever did. With amount of money what they already spent on this S2K this is just another step to improve the car. With HKS or TODA you can't go wrong. They just need to find sponsors ;)

[@4wsRyan]

Do you have the graph posted anywhere? I'd like to compare the midrange to my stock intake car with berk 3"

[@speedacademy]

Not yet, but we'll post a story to our website soon.

[@4wsRyan]

Speed Academy awesome!

[@averyalexander2303]

The short answer: Realistically an airbox can make more power because it can be set up to pull in much cooler air than the throttle bodies normally would from the engine compartment.

[@UncleSam077]

Does this f20c have aftermarket cams??

[@Nighthawk-lr9km]

looking back, how do you think the ITB compare to forced induction?

[@speedacademy]

Two very different paths. It's hard to say that ITB is better or worse since we haven't dialed in the setup but if we had to do it all over again we'd probably going supercharger for the ease of bolt-on horsepower.

[@michaelsullivan6093]

Love the videos. More s2000!

[@fredericklee4170]

where did you guys pick up those ITBs?

[@WaffleIronMan91]

Are you still running stock cams? If so, are you planning on upgrading them?

[@speedacademy]

No plans as of yet since we havent seen big gains on other builds

[@sadakotube]

Why run an inlet restrictor/airbox? Unless rules says must use an inlet restrictor, I've always thought that they were not needed as they were used primarily to restrict power in racing classes.

[@victorpla29]

sadakotube because as u see with the hood closed it sucks hot air and Made less power than with the air box and 3.5" inch intake

[@sadakotube]

i see. but i think dyno fans aren't representative of real world airflow

[@kschong4163]

sadakotube fyi, those doesnt look like restrictor. those tubes are tapered and its diameter is not smaller than throttle. its more like velocity stacks

[@HassanEido1]

sadakotube they should make that airbox inlet a 4 inch.. the inlet is restrictive

[@sadakotube]

ks chong the inlet restrictor is airbox. the velocity stack is not the item i was referring to.

[@SpeedFreak0122]

open throttles + hood vents?

[@1one3_Racing]

Cams and compression and you'll get close to 300hp. I think for the few HP gain with the velocity stack you'd be better off running the air filter. Even changing oil every race you're still going to gack your sleeves real quick

[@of_lion22]

Velocity stack + inline air filter setup then? Not sure how much the inline air filter would hurt flow/velocity.

[@1one3_Racing]

Possible. But they are talking 5 or 6hp gains with the 3" and velocity stack. Would result in maybe .05 or .02 seconds a lap. Take a decent crap before your race for more benefit! They could always use the velocity stack and a thin foam filter to keep out the larger crap. Might flow ok. The ultra fine dust will flow with the oil

[@blakes2k]

This comment just shows you actually have no idea what you're talking about, the F20C is a completely different engine. "Cams and compression", won't help shit, except make your engine blow up sooner.

[@1one3_Racing]

Blake Calabrese This bloke would disagree. www.superstreetonline.com/how-to/engine/htup-0808-honda-s2000-tuning/ He made 283hp with a 2.2 with just cams, intake and exhaust. but his exhaust only made 15 whp difference. With the massive gains from their new exhaust and new tech in the last 4 years 300hp is achievable. How many more articles would you like me to show you that cams make a difference in these?

[@blakes2k]

First off, he also had stand alone tuning. You found one article about a guy making 283 on Church's dyno, which already reads high. You could drop 20k for mid atlantic spec engine or just supercharge/turbo charge it for 3-5k. Nathaniel, Superstreet isn't a credible source either. Squeezing itte bits of HP out of a F20C isn't worth it, it's all about weight reduction and driver experience.

[@jTamayo34]

If you guys wanna make a bit more NA power just throw in some cams and adjust the right timing

[@tomahoks]

jTamayo34 Don't you think S2000 has cams already?

[@MyLonewolf25]

Tom Ahoks I don't believe they changed cams

[@jTamayo34]

Tom Ahoks don't think they've upgraded the cams since they never made a video on it and besides, the cars idle would have been more rough with staged cams. Engines idle still sounds smooth even with all the mods they've done to it so far.

[@hawjpaogeeable]

love that Vtec!!!!

[@javiergarcia88]

sounds so good!

[@EdTurvey]

wow, it sounds great.

[@yeyosolis2532]

Ticon Industries exhaust set up would've been great to see on there too

[@speedacademy]

We're not at a level to be welding Titanium... YET!

[@yeyosolis2532]

I dnt doubt it! Keep up the great work fellas 👌

[@victoroliveira3256]

Would you still be able to throw a power adder (forced induction) on here and keep the itb'?

[@moejasss]

Victor Oliveira Yes you can, but it probably negates most of the benefits of the ITBs

[@MyLonewolf25]

Muhammad you still get massive benefits from itb's boosted I don't know why people say this It still gives you better smoother flow and MUCH better throttle response The current one problem if they went boosted is the airbox design because it'll bias the rear

[@moejasss]

MyLonewolf25 I have 0 experience on this subject but I assumed that a well designed regular intake manifold with a single throttle body would work just as well as ITBs in a boosted application.

[@MyLonewolf25]

Muhammad as a general rule of thumb ( except for compression) If it helps NA It'll help FI just as much If not more But it's all about making a more efficient and in turn powerful system

[@ThomasJoseph315]

Why not NACA duct it right into the air box from the hood?

[@Mast3rMindTalks]

Imagine the carbon fiber ITB and the password jdm carbon intake ? Now that would be bad ass

[@MyLonewolf25]

As long as the airbox is designed correctly and shaped correctly it'll be fine... But that is not shaped correctly for even flow... Otherwise! I love it

[@drno1022]

I want to do minor upgrades and your AP1 build from ass to badass is awesomesauce. Some great info here. I'm a firm believer of a (mostly) stock setup for street use. So I have a small question for my little 03 daily driver. I was excited that you posted the Tanabe T70040 Medalion Touring exhaust, civilized (No fart noises), priced right and it had slight power gain when paired with a replaced intake (I'm going with the K&N intake kit Kit 57-3514). What is the difference between the Tanabe T70040 vs Tanabe T80040 concept G? Did you make any comparisons? Also if you want to donate that old Tanabe, ill take it off your hands! LOL I am enjoying how far you are pushing the Ap1. Good job guys!

[@speedacademy]

It's going to be noise, the G will be louder and the difference in power gains will be so slight that you should just go with whichever one you think will sound better.

[@drno1022]

Speed Academy cool sounds like the touring is going to be the right fit then. Thanx for the info.

[@taznz1]

Great Video, show how sensitive NA engines are to intake and exhaust flow. But Guys why are you still using a hood prop, puts some hood struts on it already.

[@speedacademy]

Haha, it's so far down on our list of to-dos that we'll probably never get around to it.

[@mwverheijen]

You guys desperately need a lift...

[@IntegraDIY]

Maarten Verheijen I agree

[@THGINDIM262]

Do you already have an aftermarket exhaust header?

[@speedacademy]

Nope, we havent found many sources citing good gains over the stock exhaust on an NA build.

[@SuperNarion123]

What about making a vent in the hood ?

[@speedacademy]

That releases hot air but doesnt necessarily get cool air into the engine bay like our ITB box does now.

[@6rimR3ap3r]

I think the exhaust power gains are mostly due to going cat-less rather than just increasing diameter. Anyone else think so?

[@harryazzole7814]

Dominik Heidrich very easily could be the case. Free up the flow by removing a blockage versus just increasing the overall volume of the exhaust.

[@JerryHenderson72]

I've seen big gains just by replacing the stock cat with a high flow cat , just having extra bends in the pipe robs power . And a stock muffler has bend's inside , mandrel bend pipes make a big dif as well .

[@ardyshane23]

Probably the case. I see anywhere from 10 to 30 whp increases just by removing cats all the time. Plus I'm no s2000 expert, but no itb's are cheap. For the same money they could have done ported head, cams, throttle body, and intake of any custom sort and probably made more power everywhere. Itb's are great to eek out that last bit of power on a fully built motor in my experience.

[@everycarchannel623]

Shane P I agree I don't think itb work all to much on stock motor. But yeah they could've done everything else and made a lot better power for the same price.

[@testing316]

agreed

[@HassanEido1]

I would make that carbon intake opening larger not just the tubing

[@speedacademy]

It's hard to make it any larger with it hitting the hood.

[@marcosaruca5283]

i know you guys went single exit to save weight but wouldnt that effect performance??

[@MarkB4444]

Marcos Aruca No single is better for power

[@revolutionday1]

Marcos Aruca Looks completely jackass....

[@seanhenry8030]

Bring on the boost!