exhaust problem

  1. O

    Loud Noise When Starting And Pressing On Gas

    I have an 04 mustang, it didn't start having any issues until most recently. Its driven on the regular, mainly the highway. but one day I was getting on the highway, ( with my top down) not sure if that matters, but I hadn't dropped it in a couple months. anyways, as soon as I got on the...
  2. T

    Need Help With My O/r X Pipe!!

    Hello! New here and need some help. I have 2012 5.0 and just installed UPR o/r x pipe. Having roush ab's on I wanted it louder with is why I went catless. After the tough install, (due to unbolting in a very awkward area using jackstands) it sounded great and I really loved the sound. But after...