ATP EFILive "Idaho Rob" Auto Cal Duramax Custom Tuning
Level 1 Mild Max ATPTrucks AutoCal for your Duramax. This is the choice for your stock transmission, stock turbo and stock injectors. With the absolute best in EFILive 'IdahoRob' tuning for drivability, mileage, towing and street fun. Includes DSP5 switch.
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