Ok so I just got a 04' WRX and I when I went to the dealer I also drove an 05' that had the SPT exhaust on it and I was really impressed by the sound and performance.

So today while at the dealership I decided to have the SPT 3" Cat-Back system installed. My car is all stock except for a Drop in K&N Panel Filter. Well after a while I was told my car was done so I got in and left...

Well here is my question.. would there be any reason why my car would now seem slower???? I could be crazy but it really seems like I lost a lot of power I was only goign by the famous butt dyno, but while I was on US 19 it seemd like the car wasnt pulling through the gears as it was with the stock exhaust...

Just some input on the situation would be helpful. Like I said the car is stock except for K&N Filter and the SPT Cat Back system.

Thanks,

-Paronoid WRX Owner