I bought a CT racing pipe this last year. It was the mid range model and was asked to try it out and if I didn't like it they would take it back. After 2 days of tuning, it has less bottom end then my FMF pipe and flat on the top end and loses power. After looking closer at it they welds are to hot that the metal at the weld points sink in. and the pipe hits the frame a lot and doesn't have enough support to hold the pipe so it leaks a lot at the flange. So I would not recommend at CT pipe at all.