I'm supposed to race a Volkswagen GTI tonight for some cash. I have a stock WRX plus a K&N (like that'll make a difference) and this guy wont tell me what he's got under the hood. We looked in his car and couldn't see anything performance (like a boost controller)...he does have an aftermarket exhaust though. Am I gonna mop the floor with him or should I not bet. It's only for about $30.