Street Tune Only for EFI Live Spade

Features:

• Gain up to +110 HP and +198 ft-lbs torque
• Smooth, responsive throttle with no dead pedal
• Fast acceleration and lighter overall feel
• Custom-built Street Tune for daily driving
• Emissions intact, 50-state legal compliance
• Retains factory turbo-braking functionality
• Over 100+ ECM calibrations from stock
• No cutting or wiring into factory systems
• More power, less soot than box programmers
• Works with EFI Live AutoCal V3 hardware
• Supports tuning multiple trucks with licenses
• Real, responsive U.S.-based customer support

Unlock Hidden Power Without Sacrificing Daily Comfort

If you’ve been itching to wake up your 2011 Silverado or Sierra 2500HD/3500HD with real seat-of-the-pants power, this custom Street Tune is exactly what your Duramax needs. Designed to deliver up to +110 rear-wheel horsepower and an impressive +198 ft-lbs of torque, this tune completely transforms how your truck feels on the road. Acceleration is noticeably quicker, throttle response is crisp and immediate, and the truck simply feels more alive under your right foot. What’s more, this tune keeps your emissions equipment intact and is 50-state legal, so you don’t have to worry about compliance issues. It’s the most power you can add while still maintaining factory reliability and drivability, making it perfect for the daily highway commuter, the weekend cruiser, or the truck owner who misses that punchy diesel feel. You’ll notice the difference the first time you roll into the throttle, the smoother power curve, the refined control, and the way your truck just feels more eager to move. It’s not just about numbers on a dyno sheet, it’s about making your truck something you actually love driving every day.

Real Performance Backed By Smart Engineering

This custom Street Tune for the 2011 6.6L Duramax LML is more than just a bump in power, it’s a fully engineered recalibration with over 100 changes from the stock ECM. Every adjustment is designed to bring out the best in your truck without compromising key systems or factory safety parameters. The tuning is delivered through EFI Live’s SPADE AutoCal V3, a handheld device that allows you to flash the truck at home, scan for trouble codes, and data log engine performance without the need for cutting or splicing into any wires. This system is cleaner and more reliable than traditional box programmers, offering more precise control and significantly less soot output. Best of all, the factory turbo-braking feature is retained, ensuring safe and predictable engine braking on downhill grades. Whether you’ve added bolt-ons or kept your truck stock, this tune adapts to your setup for an optimal blend of performance and durability. For enthusiasts who understand the value of thoughtful calibration over generic tuning solutions, this is a true step up in every way.

Fitment: 2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Notes:

• Requires EFI Live AutoCal V3 (SPADE) hardware
• Includes EFILive license when hardware is purchased together
• If using existing hardware, a new license is required
• We need the Serial Number and Auth Code for existing devices
• This is a single Street Tune, not Switch on the Fly
• Not recommended for regular or heavy towing applications
• Excessive abuse or high temps may cause mechanical issues
• Built for emissions-equipped trucks, no deletes required
• 50-state legal with E.O. No. D-845
• Recommended TCM tuning for optimal performance and shift quality
• Works best with lightly to moderately modified trucks
• Custom tuning is non-refundable once delivered