2020 - 2025 GM L5P 6.6L Duramax | TCM Retune w/ PPEI Exhaust Braking Feature
PP-PEBFFor customers already equipped with PPEI TCM tuning, upgrade to the PPEI Exhaust Braking Feature and experience big-rig performance. This system activates the moment you release the throttle, seamlessly downshifting to the optimal gear for a powerful exhaust brake that surpasses stock settings. Ideal for towing, it provides exceptional stopping power, though its aggressive feel when unloaded can be fine-tuned by PPEI for a smoother ride. At lower speeds with the throttle fully off, it engages exhaust brake mode, emulating the commanding performance of an eighteen-wheeler. Want to skip the downshift? A light tap on the gas does the trick. Engineered like a Jake brake, this upgrade is built to dominate. Elevate your drive and let us know how it transforms your experience!
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WHO IS THE TUNER/CALIBRATOR
PPEI, also known as Power Performance Enterprises, Inc., is led by the business owner and lead calibrator/tuner Kory Willis. PPEI began calibrating/tuning back in 2008, specializing in Diesel Performance but has since expanded into the Gas and Powersports industries. Kory and the team at PPEI have set many world records along with continuing many industry “firsts”. We take pride in knowing that Kory not only prides his work, but also thoroughly enjoys setting expectations high for our team so our customers can have the best products available in the world.