Optimized Stock Tune incl EFI Live Spade

Features:

• Emissions intact and 50-state legal
• Includes EFI Live SPADE AutoCal v3
• Slight revisions to factory calibration
• No significant increase in peak power
• Reduces smoke output under normal driving
• Helpful for diagnosing truck issues
• Ideal when letting others drive your truck
• Compatible with transmission-only tuning
• Supports custom tire sizes and TPMS settings
• Works well with minor intake upgrades
• Can tow but lacks tow-specific power gains
• Includes EFILive license with hardware purchase

When You Want Control Without Extra Power

If you're not chasing huge horsepower numbers but still want to make sure your 2015 Duramax runs its best, the Optimized Stock Tune is a solid call. This is perfect for anyone looking to clean up drivability, dial in a few calibration tweaks, and keep emissions equipment right where it is. It’s especially handy if you’ve added a custom intake or made small upgrades but don’t want to go overboard with performance. Think of it like smoothing out the rough edges of your stock calibration. Whether you're handing the keys to a family member or you're just getting started with tuning, this tune adds safety and confidence. The lower smoke output is also a bonus, especially for clean street driving. You won’t gain a bunch of peak power, but that’s not what this tune is for. It’s about reliability, refinement, and helping your truck feel more predictable and responsive.

The Smartest Tune For Subtle Refinement

This Optimized Stock Tune is designed for those who want precision without pushing performance limits. It keeps your emissions system intact and meets 50-state legal requirements under E.O. D-845. The calibration includes over 100 small changes from stock, improving throttle feel, reducing smoke, and helping identify mechanical issues more easily. It works great with custom tire size settings and resolves TPMS calibration issues, especially if you’ve made changes in the suspension or wheels. This tune also supports drivers who want to pair it with transmission tuning for better shift behavior and smoother low-speed control. You still get the power to tow, but it’s intended for light-duty or general hauling, not for replacing a true tow-specific tune. With the included EFI Live SPADE and license, updates and diagnostics are simple and repeatable. Whether you're a beginner or just want a more refined stock experience, this tune has your back.

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

Notes:

• 50 State Legal under CARB E.O. No. D-845.
• Emissions equipment remains fully intact and functional.
• Designed for minimal changes to factory calibration.
• No significant gains in peak horsepower or torque.
• Ideal for customers new to tuning or wanting subtle changes.
• Good option when others drive your truck regularly.
• Can help troubleshoot physical issues with the truck.
• Great if you've installed minor upgrades like a custom intake.
• Useful for setting tire size to correct TPMS issues.
• Includes EFI Live SPADE and tuning license.
• Not intended to replace tow-specific performance tuning.
• Transmission tuning is highly recommended for best results.