Home › Forums › Gen III / Gen IV › Mopar Performance exhaust on Gen4

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    • Shannon Whitehead
      Keymaster
      February 7, 2015 at 10:05 am
      Post count: 274799
      #169963

      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.

    • Shannon Whitehead
      Keymaster
      June 11, 2025 at 2:15 am
      Post count: 274799
      #17047

      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!

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