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PPEI 2017-2021 GMC/Chevy L5D Duramax 6.6L Tuning | HP Tuners

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  • Regular price $1,124.99
Shipping calculated at checkout.


2017-2021 GMC/Chevy L5D Duramax 6.6L Tuning | HP Tuners

FROM: $1,124.99

Gain 145+ HP and increase torque. Maximize efficiency and drastically enhance your truck’s throttle response.

  • Level 1: Stock
  • Level 2: +30 HP
  • Level 3: +65 HP
  • Level 4: +120 HP
  • Level 5: +145 HP

New HPTuners Modified ECMs & TCMs are currently on backorder. We expect to receive them in small quantities and will ship out accordingly.

This tuning package can only be installed using the HP Tuners RTD or MPVI2.

 PPEI is making great strides in expanding the performance of on-highway vehicles and only offers emissions compliant tuning.