2001 - 2010 Duramax | Kodiak Cutaway Topkick Vans | EFI Live

**If you purchased a license ONLY for $125, you are confirming that you already have a flash device (AutoCal or FlashScan). If you do not know what either of those are you need to select the AutoCal Device + EFI Live License option to flash your truck. 

Get more from your 2001–2010 GM 6.6L Duramax-powered commercial, medium-duty, or van application with custom EFI Live tuning built around your vehicle, transmission setup, and intended use. Supporting LB7, LLY, LBZ, and LMM/LGH Duramax platforms, our tuning is designed to improve horsepower, torque, throttle response, drivability, and overall performance.

Whether you’re tuning a Chevrolet Kodiak, GMC TopKick, C4500/C5500, Savana, cargo van, or Duramax-powered cutaway, multiple calibration options are available to suit everything from daily driving and commercial use to towing and higher-performance applications.

With EFI Live, your calibration can be tailored to how the vehicle is actually used—helping improve power delivery, drivability, towing performance, and overall responsiveness while retaining the functionality you need from your Duramax-powered workhorse.

Fits

• LB7 LLY LBZ LMM 2500 3500
  • 2001 / 2002 / 2003 / 2004 / 2005 / 2006 / 2007 / 2008 / 2009 / 2010
  • Pickup and Cab Chassis/Incomplete Trucks
• C4500
• C5500
• Kodiaks
• Cargo Vans
• LMM LGH Cutaway

The Benefits of Tuning

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

Tune Power Levels:

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 EFI Live AutoCAL Device + Licensing for installation, unless the individual already has an EFI AutoCal or FlashCal Device and the appropriate Licensing.
• A Windows based computer is needed to flash the tuning into your vehicle/transmission.
• Detailed instructions come with every tune on how to download a simple file onto your AutoCal and onto your vehicle.

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 Duramax Kodiak Cutaway Topkick Van full kit, you’ll need:

• Device + License
• Tune Package

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.

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