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  1. HP or Diablo?

    Challenger Performance Mods - Engine - 6.4L HEMI
    Putting my fundamental objection to having to buy a second PCM aside for another day, I'm struggling with trying to decide between HP and Diablo. Price-wise for the setup, the Diablo would be a couple of hundred bucks less, and while substantial, it's not quite enough to tip the scales (for me...
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