I installed my ITG airfilter on my C-Coupe and I can feel the difference. At high rpm like 40mph in second gear at full throttle the tires actually chirped. It didn't do that before. I haven't dynoed it but I did do a dyno with the factory filter and with no filter and got 5.9 hp and 2 ft-lbs torque increase so my guess is the ITG air filter nets out close to that amount. This is for a car with a performance pulley, I don't know if you would get the same results from a non-modded car.
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