Originally Posted by Josh@HoPRacing
The heat exchanger which is located in front of the car just behind the bumper is actually really good from the factory, holds about 2 pints more coolant than some aftermarket replacements that claim to be better. I'm assuming this is what you are calling the intercooler. The intercooler itself which is below the supercharger is made from garrett I believe, I looked at doing a custom intercooler replacing the factory core stlye and going to laminova cores. Problem I had was the length of the cores and the room for the intercooler was insufficient. Never should anything be admitted into the engine before the sensor, always inject after. Basically it all boils down to :
IAT=Octane. The higher the temps the higher the octane.
Reason I wanted to inject before the iat sensor was if I inject after the iat the ecu will still pull timing because its still reading the warmer aircharge after the intercooler (if my theory is wrong please enlighten me). I figure the intercooler system in these cars is too small and insufficient to really cool down the aircharge under heavy load anyway.