Well I started it out with the invidia mids, no cats, fsport exhaust with fsport intake. The PPE headers did make a noticable bump in power but... the noise with this setup is just retarted, i mean I like loud but crusin at 80 you cant even hear yourself think. Put in the high flow ppe cats and did help some with noise but its still wayyy over the top. If didnt have the fsport axle back think it would sound just right though.

 

Good read up on this thread, thinking about getting these....