05-08 exhaust question

[LXguy88]

My buddy has a 07 gt, and he just bought a OR x pipe (pypes). Has anyone done this do theres. Do you know if you need mil emlimantors (I assume you do) and was it way loud. Please let me know because he's thinking of returning it if he doesn't find answers.

[cam303]

I turned off the o2 sensors with the sct tuner so i didnt need the eliminators. If he dosnt have a tuner he will need the eliminators. I have the pypes off road x on my 07 with a flowmaster axle back and it is very raspy.