CARB EO Pending Gain 180+ HP over stock, tow your toys effortlessly, and rapidly increase acceleration. Tuning engineered for optimal efficiency. Level 1: +30 HP Level 2: +65 HP Level 3: +100 HP Level 4: +120 HP Level 5: +180 HP This tuning package can only be installed using an EFILive AutoCal V2/3, FlashScan V2/3 or HP Tuners MPV3/4 or RTD4 Before tuning a 5.9L truck, ensure it is returned to its factory/stock/OEM programming. Failure to do so may brick the ECM due to its programming and cause licensing issues with the HPT software, as the license is applied based on the vehicle's configuration. Provide the info log/read file only after restoring the vehicle to stock