PPEI Transmission Tuning For 2017-2023 GM 6.6L L5P Duramax powersports 5 Inch Cat Back Single

5 Inch Cat Back Single Side 3 1/2 Inch Cat Back

LED Alerts

2004-2008 4WD F-150 will gain 1

Kit also includes front/rear shock extensions

PPEI Transmission Tuning For 2017-2023 GM 6.6L L5P Duramax powersports 5 Inch Cat Back SingleExtend your L5P Duramax's transmission's life and increase your fuel economy with PPEI's T87A T93 Transmission tuning! A MUST for tuned trucks with additional torque. PPEI was the first to offer transmission tuning for these new allisons and we have not let off the throttle since! The refined shift points get rid of the low rpm Lazy feel these trucks have that force the driver to stab the throttle for a downshift not cool and a fuel economy killer!