Heavy Tow Tune Only for EFI Hardware Duramax LLY (2004.5-2005)

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You will need an EFI License that you can buy from us

Motorops Heavy Tow Tune

• For towing from 8,000lbs up to Gross Vehicle Weight Rating
• Wider torque curve assists heavy loads
• Smooth and even power delivery
• Improves fuel efficiency
• Adds 40 rear wheel horsepower
• Adds 80 ft-lbs of torque
• Exhaust temperatures drop up to 100F under full load
• Motorops tunes produce less smoke
• More consistent power delivery
• Easy installation instructions
• Telephone support during installation if needed

Recommended Option

Transmission Tuning

• Increased transmission line pressure for holding more HP and torque
• Revised shift schedule to improve drive-ability
• Keeps the truck on top of the turbo
• Improved shift timing
• Re-designed torque converter lock-up strategy
• Allows power transfer from the engine to the wheels more directly