I've seen a few videos on Youtube of people removing their exhaust resonator to make their car sound better, but does this do anything performance wise(good or bad or nothing at all).
http://www.youtube.com/watch?v=qQBi7tMqv64&feature=relmfu
I own a 98 impreza L with a naturally aspirated EJ22, and while looking the motor over I noticed a hole with a cap bolted to the engine. It looks like where a turbo would go, but I am not sure?