[gizmo5]

Welcome!

First thing - Gut the rear cats Gut the rear cats Gut the rear cats Gut the rear cats

Then... CAI, exhaust, and tuner. That's all I have done for performance, and I love it...

 

[gizmo5]

If you gut the rear cats you will not throw codes because there are no O2 sensors after them. Visually, it looks stock so you're good to go there. As for FM 40's or 50's, they are not the best for performance, but if you're in it for sound and not speed then pick whatever exhaust setup you like best.

IMO, if you follow my suggestions, your performance will skyrocket compared to where you are right now.

 

[gizmo5]

Like I said earlier, and what jpac811 said above, dump the flow master idea if you want performance. It's kinda redundant to gut the rear cats and then clog it all up with a baffled FM muffler.

 

[gizmo5]

This is by far the most complicated thread EVER...

Dude... Seriously... I'm not been sure what's going on anymore...

What you should really do is start off with 3.50" cats that go to a "U" pipe that's 3.25" and then blend that into a 90 deg "L" bend that will help with the dual exhaust flow, and then after the dump install some magna flows for ZERO CIS...

:eyebrow: