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catalytic converters

  1. high flow performance Catalytic converters

    General Challenger Discussion
    Hi, I have a 2015 Challenger RT Scat Pack (392 hemi). Are there high flow performance Catalytic converters for this? or does this car already have high flow performance Catalytic converters ? I know it comes stock with shorty headers. Thanks James.
  2. High flow catalytic converters

    Performance Modifications
    I have a 2014 Challenger RT, 5.7 HEMI. I've added the Mopar cold air intake, and for the exhaust, cat-bak, Flow master 40. I'm using the stock exhaust, simply replaced the mufflers with flow master 40's and removed the resonators at the end, replacing with just straight pipes. I also have the...
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