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d1 vs p1

  1. Challenger Performance Mods - Engine - 5.7L HEMI
    I currently have a D1 procharged Rt challenger...I'm really regretting buying the D1 over the P1 because of a graph that I have seen a few times from pro charger...I have no plans of building my motor or running more than 8 psi. Did I make the wrong seems like the P1 makes more...