Originally Posted by FG101C

Quick question. should I be running a JP-1 pipe on a 528x r or will that cause tuning problems. Tuning problems are what I'm having, everything is sealed up nice and I do have a pretty good grasp on tuning. Just wondering if the JP-1 is too much low end tune and causing issues. I will try another pipe but it's the pipe that came stock with the Hyper ST PRO and not sure how good it is either.

Thanks for any input.