2017+ Duramax L5P Tuning
Take your L5P to the next level with the best in the business! L5P Tuning Package includes everything you need to tune your 2017 - 2021 L5P Duramax. No need to delete your exhaust or tamper with emissions equipment to get the best performance out of your truck. Our L5P Tuning Package unlocks the power potential that you paid for when you bought the truck from the factory.
While the rated output for the L5P is 445 HP and 910 ft-lbs of torque it dyno'd 405 Rear Wheel Horsepower (RWHP) and 850 ft-lbs on our loaded chassis dyno. This is an improvement from previous models but pales in comparison to the 550 RWHP you'll have access to with our tuning.
L5P Switch-On-The-Fly Tuning
Custom Switch-On-The-Fly Tuning is the most convenient option for your 2017-2021 L5P Duramax. This is an exciting feature for any L5P enthusiast. You can now use your steering wheel controls to change tunes instantly while driving. That means you can run the Street tune for daily driving and commuting, then switch to your tow tune in an instant, hook up to your trailer, and go.
With DuramaxTuner’s L5P Switch-On-The-Fly Tuning you will get 5 purpose-built engine tunes.
- Optimized Stock cleans up the stock calibration and increases stock power level drive-ability.
- Heavy Tow (+40 HP) is designed for keeping your truck safe while towing 8,000 lbs. all the way up to GVW.
- Light Tow (+80 HP) is going to be your go-to tune for towing loads that weigh less than 8,000 lbs.
- Street (+100 HP) is your daily driver tune. The additional 100 Rear Wheel Horsepower option gives you the best mix of performance and reliability that you can get.
- Race (+150 HP) is our emissions-equipped peak power tune is literally more power than you need. The 150 Horsepower you get here will push your truck to the limit.
TCM Tuning
Transmission Tuning for 2017 – 2019, 6 Speed Allison 1000 is going to give you the firm, positive shift that you’re looking for. The T87a TCM (Transmission Control Module) that controls your transmission is calibrated based on the expected torque output of the engine. Your custom engine tuning will change that toque output. Updating the TCM calibration will give you improved shift quality, increase your clutch holding capacity and allow you to put that newfound torque positively to the ground.
This package includes:
- HP Tuners Unlocked ECM
- HP Tuners Unlocked TCM
- HP Tuners Unlocked MPVI2 cable
- HP Tuners Universal Credits
- DuramaxTuner.com's ECM Tuning Options
- Single Tune File Package (Select 1)
- Optimized Stock
- Heavy Tow (+40 HP)
- Light Tow (+80 HP)
- Street (+100 HP)
- Switch-On-The-Fly Tuning Package (5 SOTF Tunes)
- Optimized Stock
- Heavy Tow (+40 HP)
- Light Tow (+80 HP)
- Street (+100 HP)
- Race (+150 HP)*
- DuramaxTuner.com's TCM Tuning (2017 - 2019)
- Increased clutch holding capacity
- Improved shift quality
- Optimal Torque Converter lock-up strategy
- Single Tune File Package (Select 1)
Our extensive testing of the 2017 - 2021 Duramax-powered 2500/3500 HD pickup truck has given us powerful insight into this platform. We took our time to completely understand the system and how our tuning would impact performance and reliability. Whether you are towing, commuting, or just daily driving your truck we know our calibration is going to be safe and completely satisfying.
* +150 RWHP was achieved on our Mustang Dyno in a controlled environment at sea level with basic supporting mods such as an aftermarket Cold Air Intake and aftermarket Intake Air Horn.
** CORE CHARGES REQUIRED FOR IMMEDIATE SHIPPING
*** THIS PRODUCT IS CURRENTLY ONLY AVAILABLE THROUGH OUR OFFICIAL DEALERS AND AUTHORIZED REMOTE TUNING LOCATIONS
**** TO RETAIN YOUR TRUCKS' FACTORY VEHICLE ANTI-THEFT SYSTEM (VATS) A GM DEALER TOOL or MDI TECH 2 FOR PROGRAMMING
***** HP TUNERS PROVIDED ECM EXCHANGE INSTRUCTIONS CLICK HERE
HP Tuners Disclaimers:
NOTE: Note this ECM exchange service is completed at the owners' risk, HP Tuners will not be responsible for the vehicle, its power-train or electronics, nor how the ECM is used, calibrated and its functionality. Should you experience any issues with your ECM, please contact support@hptuners.com for assistance and how to proceed.
A reminder that your ECM will not be returned to you, this service is an “exchange” and you will receive another modified ECM in its place. There is an outright purchase option available, give us a call (815-568-7920) to discuss your options.
We exchange and modify ECMs as fast as we can, but initially, please allow at least 3 business days (plus the time to ship the ECM) per ECM that you send in for the exchange process to be completed.
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