What’s Included
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Tuning Configuration Options
Choose between a single performance tune or Shift-On-The-Fly (SOTF) tuning.
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MPVI4 Tuning Interface
Industry-leading hardware for advanced Duramax ECM tuning and diagnostics.
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Six (6) Universal Credits
Required for ECM unlocking and flashing.
- Coolant Upgrade Kit (MADE IN THE USA)
- Downpipe (MADE IN THE USA)
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Diagnostic Plug Kit (MADE IN THE USA)
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Exhaust Choice
‼️IMPORTANT‼️
For ALL 2017 and Some 2018 trucks, the GM E41 ECM Upgrade Kit is still be required.Unfortunately, there's no VIN cutoff to determine which 2018 models need the unlock cable — you'll only know after connecting the MPVI3 to your truck and laptop and try and write your stock file back to the ECM.
If you do need it, we offer the E41 Upgrade Cable for Rent (Click Here):
🔧 $100 rental fee
💵 $100 refundable Core Deposit
Once you return the cable, your $100 core deposit will be refunded.
We understand this isn’t ideal, but it’s the only way to confirm compatibility.
Note: This does not apply to 2019 trucks.
Performance Levels
Performance Diesel Worx custom calibrations include size selectable power levels designed for everything from stock-like operation to aggressive performance.
- Level 0: Stock Output
- Level 1: +30 HP
- Level 2: +80 HP
- Level 3: +135 HP
- Level 4: +160 HP
- Level 5: +210 HP
With Shift-On-The-Fly enabled, power levels can be changed instantly using factory steering wheel controls, allowing on-demand adjustment without stopping or reflashing.
