Optimized Stock Tune Only for EFI Live Spade

Features:

• Fits 2012 6.6L Duramax LML
• 49 state legal emissions compliant
• Emissions equipment remains fully intact
• Slight revisions to factory calibration
• No significant peak power increase
• Lower smoke output than stock
• Ideal for troubleshooting drivability issues
• Great for new or cautious drivers
• Supports custom tire size adjustments
• Maintains factory towing capability
• Requires EFI Live AutoCal V3
• Works seamlessly with transmission tuning

A Smarter Stock Calibration For Everyday Confidence

Not every 2012 Silverado or Sierra 2500HD or 3500HD LML owner is chasing big horsepower numbers. Sometimes you just want your truck to run a little cleaner, a little smoother, and a little more refined without changing its personality. This Optimized Stock Tune keeps your emissions equipment fully intact and remains 49 state legal, while making subtle improvements to the factory calibration. The result is lower smoke output and a more polished driving experience without a significant increase in peak power. Additionally, it is a great option if you have installed a mild upgrade like an intake and need proper calibration support without stepping into performance tuning. It is also ideal when someone else is driving your truck and you want predictable, factory like behavior. For cautious owners or those new to tuning, this file offers peace of mind with just the right amount of refinement.

Refined Factory Based Calibration With Practical Adjustments

This Optimized Stock Tune is engineered specifically for the 2012 6.6L Duramax LML and requires the EFI Live AutoCal V3 for flashing. The calibration makes slight revisions to fuel delivery, torque management, and throttle mapping while keeping overall power levels close to factory output. Furthermore, it can support custom tire size adjustments to help correct speedometer and TPMS related concerns. Because it maintains emissions compliance and avoids aggressive power increases, it is well suited for troubleshooting drivability issues or isolating mechanical problems. You can still tow with this tune, although it does not provide the added torque benefits of dedicated Light Tow or Heavy Tow calibrations. It also pairs well with transmission tuning for improved shift quality and overall drivability. For owners who value reliability and compliance above peak numbers, this optimized stock file delivers a clean and balanced solution.

Fitment: 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Notes:

• Fits 2012 6.6L Duramax LML only
• 49 state legal with emissions intact
• Emissions equipment must remain installed
• EFI Live AutoCal V3 required
• Additional EFILive license may be required
• No significant peak power increase
• Does not include Light or Heavy Tow gains
• Ideal for stock or lightly modified trucks
• Transmission tuning recommended for best drivability
• California Prop 65 warning applies