Switch on the Fly Tune Only L5D (2019-2023)
Total flexibility to switch on the fly while driving between all five of our emissions intact custom tunes for your 2019, 2020, 2021, 2022, 2023 Chevy Silverado 4500HD, 5500HD, 6500HD, or International CV equipped with the GM L5D 6.6L Duramax. No need to plug in a clunky box to re-flash your truck to change tunes. Literally use your steering wheel controls to change power levels whenever you need to. Giving you the power to tow light or heavy, fun daily driving, and the most we can unleash from your engine. Have the cleanest and most reliable tunes available with the power level you need right at your fingertips.
- Safely add power
- Custom tire size and speed limiter calibrations
- Easily maintain speed while towing up long grades
As low as $750.00
In stock
Get All Five Custom Tunes, Switchable while driving (Switch-On-The-Fly)
- Emissions Intact – no need to remove your emissions equipment
Do you need DuramaxTuner.com Switch-On-The-Fly (SOTF) Custom Tuning?
- Instantly Switch Between Power Levels
- Total flexibility to select the power level you need
- No need to plug in a clunky box and re-flash your truck to change tunes
- Designed to be safe for your engine and emissions equipment
- DuramaxTuner has 14+ years of experience with Custom Switchable Tuning
- Fully customized tuning with more than 100+ calibration changes from stock
- No hacking wires into control units or fuel pump and turbo sensors
- More power and less soot than box programmers
- World Class Customer Service Phone Support!
Sport Tune
- Peak Horsepower & Torque
- +125 RWHP + 240 ft-lbs
- Total 440 HP and 880 ft-lbs
- Fastest possible acceleration
- Firm shifting
- No dead pedal
- Biggest adrenaline rush we can give you
- Inappropriate use of the Sport Tune
- Too much power for towing without the proper gauges
- Enough power for an irresponsible driver to damage his truck
Street Tune
- Improved Horsepower & Torque
- +100 RWHP + 180 ft-lbs
- No dead pedal feeling
- Most power & torque you can add while maintaining OEM levels of
- reliability
- Fast acceleration - Truck feels lighter
- Mix of Fun and Superior Drive-ability
- Love driving the truck every day
- Smooth power curve
- The throttle pedal responds exactly how you want it to
- Retain factory turbo-braking feature
Light Tow
- Balance between Daily Driving and Towing
- Smooth power curve that’s fun to drive
- Custom “SMART EGT Control” will automatically manage your EGTs
- Air-Fuel Ratio limits built into calibration to limit soot production
- Designed to tow less than 8,000 lbs.
- Factory turbo brake retains complete functionality
- Horsepower & Torque Increase +80 RWHP +144 ft-lbs
- Get your truck up and moving more quickly
- More useable power in all driving scenarios
- Have enough power to “Shift Up, Throttle Back”
- Revised pedal sensitivity
- Low speed trailer maneuvering
- Back up with trailer without lurching
Heavy Tow
- Safe for Towing Heavy
- Increase power, not EGTs (Exhaust Gas Temperature)
- Custom “SMART EGT Control” will automatically manage your EGTs
- Air-Fuel Ratio limits built into calibration to limit soot production
- Designed to tow 8,000 lbs. up to GVW
- Factory turbo brake retains complete functionality
- Horsepower & Torque Increase +40 RWHP + 72 ft-lbs
- Get your trailer up and moving more quickly
- Lug in the gear you want while towing
- Have enough power to “Shift Up, Throttle Back”
- Revised pedal sensitivity
- Low speed trailer maneuvering
Back up with trailer without lurching
Optimized Stock
- Slight revisions to factory calibration
- No significant increase in peak power
- Good for troubleshooting a physical problem with your truck
- Great for when someone else drives your truck
How it works
- Place your order online.
- We will ship you all of the required hardware.
- Once you receive the shipment, follow the supplied instructions. DO NOT remove your stock ECM until you have completed the required steps and communicated with DuramaxTuner.com staff.
- After the installation process is completed, enjoy your new tuning.
Required Options
Modified ECM Purchase (Engine Control Module)
- We stock modified ECM hardware and ship it directly to you
- Remove your factory ECM and replace it with our Modified ECM (after completing the required steps defined in the instructions that will accompany your Unlocked ECM).
- Flash our custom tunes using the RTD Hardware and required HP Tuners Credits
- Ship us your factory ECM; we will refund you $1,000 when confirmed in working order
RTD Hardware by HP Tuners
- Connect > Read > Edit > Write > Drive.
- Equipped with Bluetooth®, Proprietary Expansion Port, and Mobile Device Support
- Makes it faster and easier to read, edit, and write your vehicle’s software.
- VCM Editor and VCM Scanner and programming/USB cables, making up the essentials of VCM Suite - one of the most powerful and inclusive scanning, diagnostic, logging, and calibration products on the market.
- Full support for our latest rendition of Track Addict - the fastest scanning, logging, and data transmission rates to ensure you capture everything.
- VCM Scanner is the most powerful and comprehensive scan tool on the market.
- View, chart, and log diagnostic data in real-time via the OBDII diagnostic data port.
- View and clear Diagnostic Trouble Codes (DTCs) along with other vehicle module information. Command control functions like a closed loop, fans, gear select, timing, air-fuel ratio and so much more all in real-time.
HP Tuners Universal Credits
- 8 credits are required for ECM tuning
Transmission Tuning
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6-Speed Allison Heavy Duty Transmission for 2019+ L5D
Extra attention has been invested to develop our engine tuning for L5D’s with the 6-Speed Allison Heavy Duty. Currently, there is no TCM Tuning available for these transmissions. However, we have spent countless hours going through every aspect of the ECM Tune File to ensure you have the best driving and most effective tuning possible.
Warning: This product can expose you to chemicals that are known to the State of California to cause cancer. For more information, visit www.P65warnings.ca.gov