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

Flash using your EFI Live Flash Scan or AutoCal device

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

Motorops Race Tune

• Maxes out the factory fuel system
• Adds 100 rear wheel horsepower over factory
• Adds 200 ft-lbs of torque over factory
• Recommend transmission tune to avoid premature wear
• If you drive responsibly, can use Performance as you would Sport Economy
• Also recommend FASS or Air Dog lift pump to maintain 400 RWHP
• 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