Ok so after having a good listen, i think you guys may be right in that it's 'probably' the cat converter or possibly the same problem my DA had at one stage, which was the resonator. it sure seems that way now, so i'm trying to track down an affordable catback system and a high flow cat, wanted to get xforce but am not having much luck finding a place to buy it from, last guy i checked with said it was out of production. reason for this is that i don't wanna waste money on another stock part when i'm gonna eventually buy a sport exhaust anyway.

anyone know where i could get a decent catback system that wont rape my wallet?

thanks for all the help thus far!~