Collection: GM Duramax Tuning Bundles

GM Duramax Tuning Bundles — Tuning, Exhaust & Fuel

Calibrated tuning, exhaust, and fuel hardware for the GM Duramax Tuning Bundles. Every part here is matched to your truck and ordered the way you'd build it.

What you need to tune the truck

A supported device (HP Tuners MPVI4, GDP Commander) plus a Dieselr-calibrated tune file — GDP and Chaos Custom Tuning calibrations are also available.

Exhaust

Downpipe-back and turbo-back exhaust in aluminized and stainless. Larger-diameter exhaust lowers EGT and frees airflow as power climbs.

Fuel

Dieselr and supporting fuel hardware support higher fueling as power climbs.

Compatibility

Organized by confirmed fitment for the GM Duramax Tuning Bundles.

FAQ

What do I need to tune a this platform?
A supported device plus a Dieselr-calibrated tune file.

What fuel upgrade do I need?
Stock-to-mild builds run the factory system; higher power calls for added fuel supply and supporting hardware.