Does My Supercharged S2000 Have A Hot Air Intake?

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Does your car have a hot air intake? Will a cold air intake make more power? Can swapping your intake make your car faster?

While installing the supercharger on an AP1 Honda S2000, the stock air-box is removed and replaced with a short intake which mounts directly to the centrifugal supercharger. This replacement, however, moves the intake closer to the engine and near the exhaust. Does this mean the supercharger now has a hot air intake?

To find out, I'm using a temperature datalogger to monitor four air temperature positions on the car. I'll record temperature at the very front of the car, the front of the air intake, the back of the air intake (near the exhaust), and the top of the engine. And while the effects of warm air going through the intake are mitigated with an intercooler, it's still beneficial to introduce air as cold as possible into the intake. So just how hot is the intake air? Hit the link to find out!

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They say don't text and drive, nothing about measuring different temperatures around your car and driving.

Those High tech zip ties though👌

BirdiesGoCherp
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Lots of questions/comments about the intercooler. Yes, the intercooler will help bring temps down after the supercharger compresses the air, however starting with colder air means the air entering the intercooler will be colder, and thus the air exiting the intercooler will be colder as well.
Edit - Additional note: The air temps are generally high because the air is heated by the radiator prior to being drawn in. I assumed there would be a bit more "fresh" air than there actually is. When I started driving (before the thermostat had cracked, meaning there was no coolant flow to the radiator) the intake temps remained nearly the same at the front and back of the intake versus ambient. As the engine warmed up and the radiator cracked, temperatures started to rise. This implies that the proper solution would be to have the intake pull air that has not passed through the radiator, whether that means moving the intake forward, or creating a box around it that pulls in air from the front. Looking back, I don't think a heat shield would do all that much for intake temps. Perhaps a small benefit for the back of the intake closest to the exhaust.

EngineeringExplained
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I would love to build a heat shield for the car and see what it does to these numbers. Then dyno with and with out the shield just to see if it REALLY matters. It matters in theory but will real world numbers show that too?

HumbleMechanic
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We learn: The faster you drive the cooler is your engine. So driving fast is more safe.
Good job!

einfreibierbitte
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The difference between the intake measurements is staggering! Glad I placed a heatshield behind mine.

miketo
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turn 90 degrees up

cut hole in hood

cold air

Corrosion
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The moment I see this open air intake in Jason's supercharging the s2000 video, I was like did they really left this intake like this? I couldn't believe it. And I recently come across this video which proved my point.

aknzortuk
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If you end up going OEM style and sucking the air from the side of the fender, do a dyno test before and after the change to see how much "hot air intake" looses in actual HP.

sigor
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Very informative. Always wanted to do something like this. Thanks for sharing your data.

iHatePRND
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Thanks for being scientific about the cold-air intake myth. Ive tried to explain this for years to my buddies who think taking the factory airbox off (alone) makes them faster. No, it makes it louder which FEELS faster, and draws hot air from the exhaust manifold.

Johnny-vudb
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I remember back around 2001 there was a shop selling a "cold air" intake that was piped from the throttle body to the front air inlet in the bumper resembling an intercooler. All these years I have always remained curious about the design and your video has reawoken that curiosity.

nacholivre
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I would love for you to continue this series (measuring temps and trying to perhaps lower intake temps)!! Also perhaps try temp reading in the OEM air box and the OEM air box + snorkel if that's feasible in your SC setup. I've considered the snorkel but wondered how effective it is.

It would also be cool if you did some comparative 2nd gear pulls - say 30-60 (or redline) with temp readings and then if you think you develop a better (cooler) Intake setup do the same 30-60 2nd gear pull (i'm suggesting a second gear pull only to eliminate the 1-2 shift or any other shift as a variable in the acceleration times).

Thanks for another great video!! Keep em coming!!

jakeleroy
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Man I love S2000's. The day I own one is the day I become extremely happy.
Would you ever consider uploading a video entirely dedicated to just a cruise in the S2000? Some pulls here and there; hearing that sweet sweet vtec crossover.

exedracs
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It's great to see some actual data about this topic! Oh, belated appreciation for the the dyno and road comparisons about the supercharger in previous videos.

Wayne_Robinson
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I'm glad you put a nail in the myth of "cold air" intakes that aren't. lol What is needed is a plenum that routs the air in the front of the car right to the air cleaner. Oh, yea just like the stock setup. lol Thanks!

rickhayner
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Interesting, I havent seen anyone actually measure the difference before, thanks for showing.

-Dash-
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Now you have to do the calculations to approximate performance gains from relocation. Relocate, test again. Great video! Good work.

terrencekendrick
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How is this guy doing math while talking and driving and looking at the meter. *You Win*

elijk
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relocating your air intake is the best solution .i did this on my 3.0 turbo bmw and it helps keep the power constant and reliable on track days

sameregarde
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This explains why a PO of my Turbo Supra fashioned a cold-air intake "box" using a mid-eighties Nissan turbo intake atop the engine hood and some sheet metal around the intake. It looks cool, if also a bit tacky, now I know that it probably works. Sweet. Thanks.

jacklyons