I have a 06 rosh stage one with tuner, pully and a CAI. When I bought the car new in 06 it has roush exhaust on it but sounded weak and I wanted more sound. Had a friend suggest magnaflow so I went with them. It sounded better and louder but still not what I want. I added all the perforamnce parts after the exhaust but was wondering if I should have left the exhaust on and just have got some headers? Also what you guys think X or H pipe. please let me know what you think.