Thread: Exhaust for both gtp and Gxp need help :)

Originally Posted by coolone

No need (stay 2-1/2"), there are 3" in/out mufflers available

you are aware that the gxp ls4 5.3L needs a 3 inch for best performance right....its not a v6

Originally Posted by marines542

you are aware that the gxp ls4 5.3L needs a 3 inch for best performance right....its not a v6

2x2-1/2=5" lol...

But yes, I am aware. Merely quoted that he mentioned 2-1/2" at the muffler.

O I thought u were referring to 2.5 all the way from the start lol