Originally Posted by alexcrosse
The car is already [email protected]
, but thats with standard R32 elbows, trust downpipes & japspeed 3" decat. So even thuough the current exhaust is huge, I shouldnt think reducing to 3" will make any difference with all the restrictions in front of it?
Your biggest restriction is the stock R32 outlets and I'm sure the japspeed downpiple im probably on the small side. Consider a HKS 70-85mm downpipe.