One of the most popular mods for an s2000 is Spoon's intake duct which is practically the same design as this design for the twins. To the people who think this wont do anything need to take a look at other cars that have scoops like this with cars that already have well designed air boxes from the factory.
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Originally Posted by sierra
3 problems with this intake.
It blocks the heat exchangers.
Just 200mm of water will start a bow wave that could fill the intake.
It's picking up turbulent air rather than more stable high pressure air, which could actually lower power at high speed.
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This poster said this duct wouldn't be good for the radiator temps well FYI tons of other cars have similar mods that have similar placement and they work really well. When your driving an intake duct infront of a radiator isnt going to effect anything. Like previous posters said it has NO effect that will damage or ruin your car. You probably arent familiar with the s2000 and other cars that use similar upgrades for air boxes with great factory design. If you live in places with little rain like California then you dont need to worry about locking up your car. I have never had a single problem with water on my s2000 with a Spoons Intake duct that is identical to this. If it rains just dont WOT like an idiot. You probably have never modded cars outside the FR-S/BRZ if you think this type of intake is no good when it reality intakes like these tend to be the best ones for cars like ours that have great OEM air boxes. Throw in a drop in filter and you will have a great intake that is better than what most vendors offer for our cars.
Also J's Racing/Mugen both have an intake that replaces your front bumper for the s2000 that has a cut out to attach to the intake/air box. Probably 1 of the most popular intakes for the car and you rarely have people who hydro lock or fuck up their cars if they dont drive like idiots in hard rain. Tons of s2000 owners have done this mod and if they dont hydro lock there cars with that then an intake duct like this even if it rains hard in your area shouldnt be a big deal if you dont go driving through floods.
Mods like these cant really be calculated on a dyno with just a fan. For example Mugen/J's racing intake for the s2000 on the dyno looks like shit when you compare it to an AEM intake that got 10 whp more than the more expensive J's. AEM performed better because it worked better with the fan blowing on it on the dyno. But every owner on s2i forums who talked about AEM vs J/Mugen intakes, who has owned both claim that the J's racing intake is much better when you are actually driving in real world conditions as a fan/dyno cant manipulate air moving at 60-80 mph unless you use a wind tunnel. Owners all claimed better low/mid range power/response with the J's vs the AEM which had better peak power when they drive in real world conditions.
I had the same Spoon intake duct and loved it on my s2000. I dont doubt this max racing duct is any different from the Spoon intake duct for the s2000.
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Originally Posted by 2forme
Take some logs if you can of intake temperature throughout an entire gear, 2500-7500. Then compare the temps you see against a credible weather sites published temperature for your area. The gauge in the cluster isn't too accurate for outside temp.
I'd be intrigued to see if it performs any better than a VMS or AFE intake. According to my testing of those intakes, the delta is about 5-7 degrees.
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I doubt this would out perform an AFE intake on the dyno but I wouldnt be surprised if it got similar gains to it. Like most intakes they all seem to perform the same and get around 5-7 WHP until