2017 - 2023 GM 6.6L L5P Duramax | Engine Tuning by PPEI

CARB EO Pending PPEI’s tuning for the L5P Duramax is a game-changer for truck enthusiasts and professionals alike. Unlike traditional OEM (Original Equipment Manufacturer) tuning, PPEI focuses on delivering power where it counts - at the wheels. This approach ensures that your L5P Duramax operates with heightened efficiency and reliability, whether you’re cruising on the highway, towing heavy loads, or seeking an exhilarating driving experience. PPEI offers the best Duramax Engine Tuning for the L5P Duramax platform. Additionally PPEI is hands down the best tuning / custom tuner available when it comes to tuning any duramax, especially the L5P Duramax. Understanding the Baseline: OEMs like GM quote horsepower and torque as measured at the engine, with the L5P Duramax rated at 445 hp and 910 lb-ft of torque. PPEI, however, measures these figures at the wheel, revealing the true power delivered to the ground. For the L5P Duramax, PPEI’s baseline measurements are 437-wheel hp and 844-whee