Saab 9-3 Sedan/Combi/TurboX/AWD(2003+)/Conv(2004+)
After talking with Karl -(saabnoob), I'm considering a stage 3 remap, for which I'm told I need a 3" downpipe and Sport CAT.
Can anyone tell me when saying 3" downpipe, do people mean 3" pipe which would have an outside diameter of 3.5" , inside 3.068", this is correct for schedule 40 pipe which...