Now only 4 HP Tuners Credits are needed to Tune the E41 ECM of GM Duramax L5P (17-23) - Click Here

Collection: Chaos Custom Tuning

When stock just won’t cut it, Chaos Custom Tuning delivers. Our custom transmission tune files and high-performance diesel tune files are built for raw power, sharper throttle response, and next-level efficiency. No fluff—just precision tuning for serious diesel owners.

24 products

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