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  1. So the Mach 1 is designed for continuous track use... are the cats beefed up?

    A user here posted pictures comparing the catalyst material inside the catalytic converters of both the GT and GT500. The GT's cats have a honeycomb structure while the GT500 has a square structure that is visibly thicker. -Has anyone taken a peek inside a Mach 1 cat?

  2. [Video] 2019 GT high frequency engine noise. Not the 2k rattle.

    Asking for help on this one guys. Brand new 2019 GT. I'm experiencing an engine noise that occurs under similar conditions as the 2k rattle, but It *only* occurs after the car is fully warm, consistently after 20+ minutes of driving... and It takes 20 minutes of driving. In the video, all I'm...


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