Dodge Challenger Forum banner
  • Hey everyone! Enter your ride HERE to be a part of this month's Ride of the Month Challenge!

back pressure

  1. General Challenger Discussion
    I purchased a 2010 R/T with 69k miles on it almost 2 weeks ago. I'm wanting to put magna packs and x pipe on it, but I'm worried the resonators won't be enough back pressure with the straight flow mufflers. Any advice would be appreciated. I don't want to lose hp.