Originally Posted by UBER ///M3
yeah thats a good idea i would just have to flash back to the stock one and the both of us run them with test pipes and stock tunes to see where we stand...you think it would be much of a difference in our stock cars since his is a 10 and mines a 12? in your personal opinion/experience?
Looking forward to your comparison test. I am going to install catless x-pipe with BPM tune this spring, so it would be interesting to see the difference between stock and stage 2 BPM/ESS tunes