DIESELR GM Duramax L5P All In One Kit (2024-2026)The 20242026 L5P All In One Kit Dieselr is the most complete tuning package available for GMs latest 6. 6L Duramax trucks equipped with the new E42 ECM. Built by techs, tested on real trucks, and packaged for results this kit gives you everything you need to tune your L5P the right way. At the core is the HP Tuners RTD 4 paired with one of Dieselrs custom Upto +180HP single level tune files VIN matched, dyno tested, and built for safe torque, better
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