I just picked up my first Subaru Impreza. I wanted to do some tuning/moding. Just not sure how to go about it on this. For now, I wanted to put a cold air intake, throttle body spacers, and a tune for the engine managment and air flow. To increase my hp/torque and mpg. Any suggestions on doing this? I'm not sure if it is possible for just the Impreza 2.5i, or even worth it. Or if I can use the same products fro a wrx, as this one. Thanks for the help, and any advice would be awesome!!:-)