I have searched, and cannot seem to find any sound clips of the Injen SES Exhaust with Test Pipes. If anyone has this setup, can you comment on the gains you have experienced (sound and performance wise), and also post a sound clip of what it sounds like. I am torn between going with a set of High-Flow Cats or Test Pipes. Will I notice a huge difference in performance gains from going with the Test Pipes over the High-Flow Cats? If the gains are only 2-3HP more with the Test Pipes, is it really worth it? Reviews seem to be mixed regarding Test Pipes due to the sound increase, and terrible smell. Any feedback is appreciated, Thanks.

 

Injen w/test pipes on a 350Z: video

Borla w/resonated test pipes on a G35: video