DIESELR MPVi4 Tune Files (2020-2023 Duramax L5P 6.6L)
Enhance your Duramax L5P 6.6L with DIESELR MPVI4 Tune Files. Choose between Single Tune or SOTF 5 Tunes for improved power, efficiency, and drivability.
Join the Bad Guy Motors email list for product drops, garage inspo, and VIP invites. We'll email a one-time 5% off code as soon as you subscribe.
One-time 5% welcome code
Good on any product or service invoice.
Early access
Be first to hear about limited builds, gear, and events.
Direct inbox
Need help? Reply to any email and the crew will jump in fast.
Prefer texting? Call 403-525-0432 or email support@badguymotors.com.
Heavy-duty race pipe for 2014–2018 Ram 1500 3.0L EcoDiesel. Stainless steel, mandrel-bent, high-flow exhaust. For off-road use only. Tuning required.
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.
Enhance your Duramax L5P 6.6L with DIESELR MPVI4 Tune Files. Choose between Single Tune or SOTF 5 Tunes for improved power, efficiency, and drivability.
Motor Vehicle Engine Parts
Get DIESELR EZ Lynk PowerStroke 6.7L Tune Files (2017-2019) for more power, better response, and stronger torque. Choose Single Tune, SOTF, or Full Support.