Street Tune incl EFI Live Spade

Features:

• Includes EFI Live Spade AutoCal V3
• Gain up to 110 RWHP and 198 ft-lbs
• 50 state legal with EO# D-845
• Emissions intact, no deletes required
• Delivers fast acceleration and smooth power
• Eliminates dead pedal feeling completely
• Throttle response tuned for daily driving
• Factory turbo brake remains fully functional
• Ideal for occasional towing under 8,000 lbs
• Over 100 calibration changes from stock
• No wiring or sensor modifications needed
• Supports diagnostics and tune updates

Make Your Duramax Feel Stronger Without Overdoing It

If you’re ready to add serious performance to your 2015 Duramax without diving into heavy mods, the Street Tune with EFI Live Spade is exactly what you need. It wakes the truck up with up to 110 rear-wheel horsepower and 198 ft-lbs of torque, giving it the punch you’ve been missing on daily drives and highway pulls. The difference in pedal feel alone is worth the upgrade, no more sluggish response or delay when you hit the throttle. This tune gives your truck the extra edge while still keeping things smooth, reliable, and fun to drive every single day. Whether you drive to work, run errands, or like to roll into weekend meets with a truck that feels alive, the Street Tune gives you that crisp, dialed-in experience. It’s fully emissions intact and legal in all 50 states, so you can enjoy the power without the worry. For drivers who want more excitement behind the wheel but still need a dependable workhorse, this is the sweet spot.

Clean Safe Power Calibrated For Daily Driving

The Street Tune is a custom calibration built specifically for the 2015 6.6L Duramax LML, designed to give you the most power and torque possible while maintaining OEM-level reliability. With more than 100 tuning adjustments from stock, it refines throttle mapping, fuel delivery, and shift behavior to produce a smoother, more responsive driving experience. It retains full functionality of your factory turbo brake and is 50 state legal under EO# D-845, requiring no emissions modifications. The tune is delivered through EFI Live’s AutoCal V3 SPADE device, allowing you to flash your truck, monitor performance, and log data directly through the OBD-II port. No wire splicing or tapping into sensors is needed, keeping the install process clean and simple. The air-fuel ratio is managed to reduce soot output, and power delivery stays consistent across the RPM range without spiking EGTs. While it adds significant power, it is not intended for towing heavy loads without proper gauges and monitoring in place.

Fitment: 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Notes:

• This is a single Street Tune, not a full tune pack
• EFI Live Spade AutoCal V3 hardware is included
• 50 state legal with CARB EO# D-845
• Emissions equipment must remain installed
• Custom tune is preloaded for your VIN
• Not intended for regular or heavy towing use
• Towing heavy with this tune requires proper gauges
• Transmission (TCM) tuning is strongly recommended
• Safe for trucks with stock or mild performance upgrades
• No wiring or sensor modifications are required
• Excessive abuse may lead to high temperatures or failures
• Supports data logging, diagnostics, and tune updates