2011-2016 6.6L Duramax tuning comes as 5 separate files. To change power levels you must re-program your vehicle with the AutoCal.
GDP EFI LIVE AutoCal 2011-2016 6.6L DURAMAX
EFILive tuning for the 2011-2016 Duramax is now available to meet your desired horsepower gains. Each AutoCal will come with 5 tunes. When you purchase a GDP Tuning AutoCal you will be ready to unleash the beast that’s locked inside of your truck.
2011-2016 POWER LEVELS
Power Level Name
|Position #1||NO POWER||+20HP|
*RAMPAGE REQUIRES A LIFT PUMP IN ORDER TO SEE THE FULL 230HP INCREASE.
Note:Due to the fact that this product is tuned for your unique VIN, once it is installed it cannot be returned.