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L5P Duramax Switch on the Fly (SOTF) Tuning Upgrade


Enable the ability to change tunes through your steering wheel with the OEM Cruise Control buttons. The SOTF Tuning allows you to switch between tunes without having to reprogram your vehicle each time.

  • Level 1: Valet (90% Power Reduction)
  • Level 2: +60 HP
  • Level 3: +120 HP
  • Level 4: +180 HP
  • Level 5: +230 HP

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.

SKU: T-1721DS-HPT Categories: , Tag: Compatible Years: 2017, 2018, 2019 Compatible Model/Engine: GMC/Chevy L5P Duramax

How is your tuning processed/delivered?

When you place an order for tuning all of your vehicle data, modifications, and inputs are immediately delivered to one of our elite calibration specialists. Our specialist then manually writes and creates a tune file specifically for your vehicle details. After your tune has passed all of our quality checks, it is delivered via email and stored using our order processing system. This system allows us to keep a detailed record of your vehicle details, tuning adjustments, and provide you with fast and accurate support.

What this means for you:

  • Tuning built to fit your unique vehicle.
  • Quality checked and dyno tested.
  • Fast delivery through our processing system.
  • Smarter support and tuning adjustments.

Still have questions?

We’re always looking to provide you with all of the information you need to make an educated decision.

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