1 2

Tompkins Diesel Solutions

2017-2023 Duramax HP Tuners Tuning

2017-2023 Duramax HP Tuners Tuning

$1,500.00 CAD
$1,500.00 CAD
Sale Sold out
Power Level

Take full control of your 2017–2023 Duramax L5P 6.6L with Tompkins Diesel custom tune files, featuring Switch-On-The-Fly (SOTF) tuning controlled directly from your steering wheel cruise control buttons.

Whether your truck is a daily driver, dedicated tow rig, or max-effort build, there’s a power level designed to match exactly how you use it.

🔥 Key Benefits

  • Instant power adjustments using cruise control buttons
  • Significant horsepower & torque gains
  • Improved throttle response
  • Lower exhaust gas temperatures (EGTs)
  • Enhanced drivability and towing performance
  • Safe, refined, and reliable custom calibrations

⚙️ Available Power Levels

Optimized Stock
Refined factory calibration with smoother power delivery and reduced EGTs.
  • +15 RWHP +10 ft-lbs
Heavy Tow
Built for towing 8,000 lbs up to GVWR with lower exhaust temperatures.
  • +90 RWHP +120 ft-lbs
  • Up to 100°F lower EGTs under load
Light Tow
Perfect balance of towing capability and sporty drivability.
  • +110 RWHP +200 ft-lbs
Street
Responsive and aggressive tune for unloaded daily driving.
  • +150 RWHP +350 ft-lbs
Race / Max Effort
Maximum performance pushing the factory turbo to its limits.
  • +200 RWHP +480 ft-lbs

📦 Tune Packages

  • Single Tune: One custom calibration tailored to your chosen power level
  • SOTF 5 Tunes: Instantly switch between five power levels on the fly

🔧 Optional Transmission Tuning

Available transmission tuning increases line pressure, improves torque converter lockup, and refines shift timing and schedules—critical for handling added power and maintaining long-term reliability.

⚠️ Important Notes

  • 2017–2018.5 L5P: Requires HP Tuners unlock cable for initial ECM unlocking
  • 2019–2023 L5P: No unlock cable required
  • Transmission tuning is strongly recommended for higher power levels

💪 Built for Serious Duramax Performance

No weak factory calibrations—just real performance, precise control, and serious power for Duramax owners who expect more from their truck.

*For off-road use only. Supporting modifications may be required for higher power levels.

View full details