I got my RPM data from the negative wire (black I believe) on the #1 fuel injector. Just tap in there and set up your window switch for the type of engine you have -- do you have the V6 or the V8?
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Xcharger #020, J&M LCA/UCA; 8.8/3.55 & LPW cover; Dual GT500 take offs. Black bullitts. Shaftmaster aluminum DS. PB: 13.60 @ 100+ juiced - Xcharger: 13.42 @ 101
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