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MPVI4 Tune Files 2019–2022 EcoDiesel built by DIESELR for improved drivability and towing. 2020+ EcoDiesel ECMs require HP unlock.
Custom fitments
Tell us about your platform, performance goals, and timeline. We’ll map the parts, confirm availability, and send back a detailed quote with next steps.
Custom fitment brief
Outline your vehicle, performance targets, and timeline. The build desk will confirm availability, pricing, and next steps in writing.
Dieselr aluminized downpipe back single for 2001–2004.5 GM 6.6L Duramax LB7 - strong flow, clean fit, and durable aluminized steel design.
Dieselr aluminized turbo back single for 1999–2003 Ford 7.3L Powerstroke — smooth flow, strong fit, and long-lasting steel construction.
Dieselr aluminized turbo back single for 1994–2002 Ram 5.9L Cummins—stronger flow, cooler temps, and corrosion-resistant reliability.