PPEI Engine Tuning For 2011-2016 GM 6.6L LML Duramax Transmission Fluid Bypass Valve Fully machined speed sensor port

Fully machined speed sensor port

Emission Code: 4

Replace that restrictive factory downPipe

The 3/8” diameter Pushrods are manufactured from seamless 4130/4135 chromoly tubing that is cold drawn over a mandrel for increased rigidity and flex reduction

or fuel tank sump

PPEI Engine Tuning For 2011-2016 GM 6.6L LML Duramax Transmission Fluid Bypass Valve Fully machined speed sensor portPPEI's LML tuning provides 150+ HP gains over stock, towing effortlessly, and increases acceleration drastically. Tuning engineered for optimal efficiency. Tuning is intended to increase the horsepower (hp) and torque (tq) the engine can produce. OEM manufacturers, like GM, show vehicle hp and tq based on the amount of power produced by the engine, at the engine, which is 397 hp and 765 lb ft of torque. PPEI, unlike the OEM, measures hp and tq at the