2001 - 2010 Duramax 2500 3500 | HP Tuners

Unlock better performance from your 2001–2010 Chevy or GMC 6.6L Duramax with custom HP Tuners calibration built around your truck, transmission setup, and intended use. Supporting LB7, LLY, LBZ, and LMM Duramax platforms, our tuning is designed to improve horsepower, torque, throttle response, drivability, and overall performance.

Whether you’re looking for a dependable heavy-tow calibration, improved fuel economy and daily drivability, or more power from a built transmission setup, multiple power levels are available to match your goals. Transmission tuning options further improve the driving experience with refined shift strategy, earlier converter lockup, increased line pressure, and more responsive downshifts.

Built for 01-10 pickups, cab chassis, and incomplete trucks, this tuning gives you the flexibility to tailor your Duramax to how you actually use it.

Fits

• LB7 LLY LBZ LMM 2500 3500
• 2001 / 2002 / 2003 / 2004 / 2005 / 2006 / 2007 / 2008 / 2009 / 2010
• Increase in MPG / HP / TQ

The Benefits of Tuning

• Increased horsepower
• Increased torque
• Potential improvement in fuel economy
• Improved towing performance
• Customized drivability

Tune Power Levels

Power level notes: 30HP will be used for heavy towing (up to the trucks capacity). 60HP - 80HP is best for MPG and can be used for light towing for anything under 10k LBS.

Transmission Tuning

Benefits of Transmission Tuning

• Earlier converter lockup
• Increased line pressure
• Revised shift strategy to reduce sluggish shifting
• Earlier downshifts with less throttle input
• Revised torque management

Custom transmission tuning can improve shift behavior, towing performance, and how the transmission responds to increased engine power.

Requirements

IMPORTANT:

•  All vehicle and transmission tuning require an HP MPVI Device + Licensing for deployment.
• A Windows based computer is needed to flash the tuning into your vehicle/transmission.

How Does This Work?

1. Order your device, tuning package, and required parts.
2. Complete the Tune Order Form with your truck specifications and modifications.
3. We ship your device within 48 business hours.
4. Connect your device and send us the required stock readout. Instructions are provided.
5. Our calibrators write your custom tune files.
6. Your files are sent within 24-48 business hours after we receive all required information.
7. Follow the provided instructions to flash your truck and complete installation.

Our technicians are available for phone and technical support if assistance is needed during installation.

What You'll Need

For a 2001-2010 LB7 LLY LBZ LMM 2500/3500 full kit, you’ll need:

• Device + Credits
• Tune Package
• EGR Solution
• DPF / Exhaust Solution
• 11-16 LML Duramax - DSP3/DSP5 switch

The device is used to flash your custom tune file into the truck, while the required hardware addresses the applicable factory systems.

After purchase, tunes are typically completed within 24-48 business hours from the time you have purchased, submit stock read out [if needed], and submit the tune order form.

Devices typically ship within 48 business hours, after we have received all required vehicle information, submitted tune order form, and stock readout files.

Instructions are provided based on your specific package.

Software Downloads & Instructions

Please ensure you understand and comply with all applicable laws and regulations in your local jurisdiction before purchasing or installing this product. 

Why Use Torque Works Diesel?

✅ In-house custom calibrations tailored to your truck and intended use
✅ Data-log support and revisions for drivability, reliability, and performance
✅ Financing available to make upgrades more manageable
✅ After-purchase support
✅ Detailed installation and flashing instructions
✅ Technical support included

At Torque Works Diesel, our tunes are custom written in-house.

You’re not receiving a generic third-party calibration used on every truck.

Built, tested, and refined in-house.

Financing

Financing options are available to make your upgrades easier.

Click Here for our Financing Page

See Our Customers

Check out trucks tuned by Torque Works Diesel:

Tuned by TWD Customer Page

Questions?

FAQs

Email Us: Support@TorqueWorksDiesel.com