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Cummins Tuning Options
Duramax Tuning Options
**ALL TUNE FILE SALES ARE FINAL AFTER THE TUNE IS EMAILED, REFUNDS WILL NOT BE GIVEN AFTER THE FILE IS SENT**DSP5 tune for LLY & LBZ Duramax
Tune comes with 5 power levels that are switch on the fly. Power levels vary by year model. You will need to install a DSP5 switch to change power levels. DSP5 switch is not included in purchase price.
If the VIN# begins with 1GB or 1GD, a stock read will be needed to provide correct tuning support
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