I have recently put the 3" exhaust kit and a CAI with throttle body spacer from AFE on my 2dr jeep jk and at low speeds the jeep seems to be struggling. If I floor it the jeep seems to have alot of power and can get after it but it jus doesnt seem to be running right even idling it seems rough. Any body know maybe y?

 

Check the throttle body spacer and check to make sure all the fittings on the exhaust are snug. U need to tighten them up now and then. I have the afe 3 inch with a banks Cai and superchips no prob

 

3in exhaust is pretty much overkill on a n/a 6cyl jeep....and the loss of your low end shows that.

 

I started off with the aFe scorpion package, aFe intake and TB spacer. After tweaking it for days the cat back part of the system came off and went back to aFe. I put on the Banks cat back system and it all works great. I picked up a total of 31 lbs of torque and 22 hp on my 2012 at the rear wheels. I also like the smaller muffler that I got from Banks. It's less prone to damage on the trails although the first trail mangled the nice chrome muffler tip... nothing a sawzaw didn't fix.