Hi there guys. Recently tried to sell my 3" diwnpipe, but after a friend said he would have it but then let me down, I am now reconsidering getting it fitted to my ko3 gti with a stage 2 map.
The only thing putting me off is that the downpipe has a build on reducer to mate up with the oem cat back. Will this give me a bottleneck effect??
Has anyone fitted the same sort of system. If so does it have any effect on performance.
