While the rated horse power for the L5P is 445 HP and 910 ft-lbs of torque it dyno'd 405 Rear Wheel Horse Power (RWHP) and 850 ft-lbs on our loaded chassis dyno. This is an improvement from previous models but if you have ever driven a diesel truck at 500+ RWHP you will immediately notice the difference.
Our extensive testing of the 2017 and 2019 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.
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.
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.
Duramax Tuner 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.
Your order of $99 or more gets free standard delivery.
- Standard delivered 4-5 Business Days
- Express delivered 2-4 Business Days
Orders are processed and delivered Monday-Friday (excluding public holidays)
