1 7/8 in. Not sure on the merge. A friend of mine works for Dynatech/ AFCO racing. He handled getting it for me.
I'm anxious to hear what this will sound like. May end up with kooks axle backs in the future. But want to make sure this isn't too loud first!
Thanks, was thinking 3in. But wasn't 100% so I went with not sure. Do you think I'll need a tune being that I'm going with the catted X?
.It's a hi flow catted X pipe...not supposed to trigger the o2 sensors, just wondering if I'll need the tune to make it run correctly or not. I understand if it were cat less that it would need a tune to get around that
I have the same set up on my Shelby..
Had to turn off my 02 sensors on my 11 with Kooks X pipe & high flow cats.
( will be replacing the X pipe with what Kooks calls a " green catted X pipe " ) " ◦
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" 49 State EPA Legal
◦No Check Engine Lights Or Tuning Required "