Mopar Performance exhaust on Gen4

[kclark]

I just purchased a set of M&M headers and cats and was planning on running the stock mufflers with this setup. I seem to recall seeing this done by a few people but wasn't sure if this hurt HP/TQ much. I also wondered about the Mopar Performance Exhaust and wondered if it would be better than the Gen4 stock mufflers since it was released prior to the Gen4 vehicles. Anybody have dyno numbers for headers, cats and stock exhaust? Thx!

[Late Apex]

For the total package on performance and sound get a cat back system too over your oem. You will get many opinions on which one but they are all better than oem. I gained about 40 HP on my 09 ACR with headers, hi flow cats, and I swear by the Belanger cat back. Awesome sound and fitment.