Originally Posted by GreenF350
I think a little of both. I know people spray nitrous on the intercooler to cool it, but I highly doubt that STI's come with that tank setup from the factory. Maybe I am wrong though. Sorry I can't really help more.
I hate to say it,,,but you are wrong,,the STi's do come from the factory that way. The way the suby's are set up is there is a misting system that bolts to the underside of where the hood scoop(this piece is also called the air diverter) is. All the air that comes threw the hood scoop is pushed right through the IC. There is a rubber gasket that seals right around the IC,so basicly the IC is force fed air through that scoop. Guys have done tests on recording the amount of how much the air temp drops because of spraying, and if I remember correctly, it lowered air temps anywhere from about 20 to 60 degrees( depending on how hot it was outside and how fast you where going). The STi IC is about 20" wide14" tall and 4" thick,thats quite a bit smaller than a SD IC. I think you would probably go through a whole lot of water to spray down a SD IC. I'm not sure on how much of a difference it would make on a diesel motor,but it does make a noticible difference on a gasser.