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Enhance your Cummins 6.7L with DIESELR MM3 Tune Files. Choose between Single Tune or 5 Tunes (SOTF) for improved power, efficiency, and drivability.
Custom fitment brief
Outline your vehicle, performance targets, and timeline. The build desk will confirm availability, pricing, and next steps in writing.
Dieselr Aluminized 4" CAT back exhaust for 2001–2004.5 GM 6.6L Duramax LB7 - smooth tone, improved flow, and durable aluminized steel build.
Dieselr 3" aluminized turbo back single for 2016–2021 GM 2.8L Duramax—clean fit, smoother flow, and durable aluminized steel build.
Dieselr aluminized 3" 2-piece downpipe for 1994–1997 Ford 7.3L Powerstroke—tight fit, smooth flow, and durable heavy-duty design.
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