imma do a quarter mile in like 20 seconds anyways so i could give a **** less if my muffler gives me a few extra hp's. lmao
On the 04-10 f150 5.4s for ****ed up on the tune. For one they didnt enough throttle response and two the shift poits sucked. Go with custom tunes from a rep i posted on the performance thread to wake your twenty ten up
had straight pipes on my 92 i6 lol. Sounded alright but sound like a 6. I think any exhaust you put on the inline 6 will almost sound the same cause i also had a 40 series flowcrappers on it and sounded the same as my straight pipe. lol