My god some people have no sense of tech, so ill explain it to you in the simplest terms possible, stick your hand out the window while your driving, good you feel that, now lick your finger and try again your finger will practically freeze, now its another way of dropping the intake temp instead of using iceboxes which are slightly less practical, as to hp gain you will notice on a warm track day the huge difference, as for everyday use not so sure if the power gain to the weight addition helps much, Evo's were never designed as shopping cars, and my Evo 6 has an auto option not sure if sti's do

p.s. Mitsus ic sprayer is not intended to clean it XD

 

Good post I loved it on my 8 was sad the X did not have it but now I can just order it and covert the yen lol.

The question is will the tech at mitsu know how to install it the guide is in Japanese