Optimized Stock Tune Only for EFI Live Spade

Features:

• 50 State Legal with emissions equipment intact
• Slight revisions to factory calibration
• No significant increase in peak horsepower
• Lower smoke output than stock calibration
• Ideal for troubleshooting mechanical issues
• Safe tune when others drive your truck
• Supports mild upgrades like custom intakes
• Compatible with EFI Live AutoCal v3
• Allows tire size adjustments for TPMS issues
• Flash unlimited updates with existing hardware
• Recommended pairing with TCM tuning for driveability
• Retains towing ability but without added power

Take The Safe Route Without Giving Up Control

If you're not chasing huge horsepower but still want your truck to feel refined and dialed in, the Optimized Stock Tune is the smart choice. This tune keeps all emissions equipment intact and is 50 state legal, so there’s zero worry when it comes to compliance. It’s perfect for those who’ve added basic upgrades like an intake or larger tires but don’t necessarily need more power. You'll notice cleaner throttle response, improved drivability, and less smoke without altering your truck’s reliability. It’s also a solid go-to when someone else is behind the wheel, whether it’s your buddy borrowing the truck or a new driver getting used to the feel. Plus, it’s a great option when troubleshooting physical issues with your truck since the tune sticks close to stock behavior. If you're easing into tuning or just want to tighten things up without overdoing it, this is the no-stress way to go.

A Smarter Tune That Works Behind The Scenes

This Optimized Stock Tune takes a strategic approach by refining the factory calibration rather than overhauling it. While it doesn’t boost peak power numbers, it makes subtle yet important improvements that enhance drivability and lower soot output. The calibration includes more than 100 adjustments tailored to your 2015 Duramax LML, keeping emissions equipment fully operational and compliant in all 50 states. It’s ideal for trucks running with minimal mods, like upgraded intakes or custom tire sizes, and includes features like TPMS correction to eliminate warning lights. Paired with TCM tuning, it delivers smoother shifts and keeps the engine within its preferred rev range, especially important if you’ve changed tires or added weight. This tune also integrates perfectly with EFI Live AutoCal v3, offering flexibility to log data, flash updates, or scan for trouble codes. It’s not built for thrill seekers, but it’s engineered for those who value consistency, compliance, and clean operation.

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

Notes:

• 50 State Legal with CARB E.O. #D-845 (SPADE Part No. #11-11).
• This tune does not significantly increase peak horsepower or torque.
• Ideal for customers who have not made major performance modifications.
• Perfect for troubleshooting or when others are driving your truck.
• Emissions equipment remains intact and fully functional.
• Helpful for adjusting tire size to eliminate TPMS errors.
• Good starting point for new tuners cautious about performance changes.
• This tune can be used with towing but does not offer the added benefits of dedicated tow tunes.
• Recommended for customers interested in transmission tuning only.
• SPADE / EFI Live AutoCal v3 device is required for use.
• Custom tuning includes over 100 calibration changes from stock.
• If reusing hardware, a new EFI Live license is required per vehicle.
• Compatible with switch-on-the-fly tuning setups.