I was at SRT in costa mesa couple of weeks ago, and I saw a red Evo there that just sound it real deep. Not the exhaust but the front. Would it be the intake? What kind of intake would make it sound so deep and loud just by idle? It doesn't sound like a 4 banger anymore .The guy was leaving so I didn't get to ask him what he has done to it. one of the tech said he has cams, but so do I and mine is not even close to that sound.