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I am considering this, but with the future possibly bringing and ESS supercharger to my car I would be scared that 1st would be utterly useless... Anyone with F/I e46 M3 and these gears??
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ESS Tuning Software, JVT (Ebay) Headers, AFE Intake, RPI Scoop, ACS Pedals, and ZHP Shift Knob.
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