Choose between 5 different power levels with the turn of a dial! Regardless of what your truck is used for, we have a solution to suit your needs! Add Transmission Tuning to increase line pressure, improve torque converter lockup, revised shift schedule and timing to help optimize performance for whatever your needs are! Recommended Fass Lift Pumps. Make sure to confirm the year of your LML: 2011-2014 FASS Titanium Signature Series 165GPH, 2011-2014 LML Duramax 6.6L (TSC – The Tune Supply Shop 2015- 2016 FASS Titanium Signature Series 165GPH, 2015-2016 LML Duramax 6.6L (TSC – The Tune Supply Shop OPTIMIZED STOCK: + 10-15 HP, + 30-40 ft-lbs torque Deletes dead pedal Leaves factory rev limit in place HEAVY TOW For towing from 8,000lbs up to Gross Vehicle Weight Rating Wider torque curve assists heavy loads + 40 RWHP, + 80 ft-lbs torque Exhaust temperatures drop up to 100F under full load LIGHT TOW For those towing below 8,000lbs Perfect balance of sport driving & functionality Designed for weekend tower, boats, small tractors, etc Unhook and enjoy a sportier drive + 60HP, + 120 ft-lbs torque SPORT ECONOMY Fun “unloaded” daily driving For driving around town, highways + 110 RWHP, +200 ft-lbs torque Puts your vehicle near the 500 RWHP mark RACE Maxes out the factory fuel system +140 RWHP, +260 ft-lbs torque Adds 260 ft-lbs of torque over factory Recommend transmission tune to avoid premature wear Can be used for daily driving (depending on driving habits) Also recommend FASS or Air Dog lift pump to maintain 530 RWHP