Features:
If your 2011 Silverado or Sierra 2500HD or 3500HD feels like it is only scratching the surface of what the LML can really do, this Five Tune Pack opens the door to its full potential. Instead of committing to one power level, you get Sport, Street, Light Tow, Heavy Tow, and an Optimized Stock option all in one setup. The Sport tune delivers up to 135 rear wheel horsepower and 243 lb-ft of torque, giving the truck a strong, responsive feel that makes merging and passing effortless. On days when you just want smooth, confident daily driving, the Street tune offers a balanced bump in power with excellent throttle control and reduced soot output. When it is time to hook up a trailer, the Light Tow and Heavy Tow calibrations are built to keep power usable and controlled, not wild or unpredictable. Additionally, the Optimized Stock file is perfect for troubleshooting or when someone else needs to drive your truck. With emissions equipment remaining fully intact and 49 State Legal compliance, you get real performance gains without unnecessary headaches.
Behind each tune is a carefully developed custom calibration featuring more than 100 changes from stock, all designed to improve drivability while protecting your engine and emissions system. Built in air fuel ratio limits help manage soot production, while SMART EGT control in the tow files actively monitors and manages exhaust gas temperatures under load. The included EFI Live AutoCal V3, also known as the SPADE device, provides simple OBD flashing along with data logging capabilities for diagnostics and fine tuning insight. This is not a generic box programmer but a professional level tuning solution that can flash multiple trucks with proper licensing and supports up to 600 VIN slots. Furthermore, pairing the ECM tuning with recommended TCM tuning helps optimize shift timing, torque converter lockup, and clutch holding capacity. That combination keeps the engine in its preferred rev range and makes better use of the wider torque curve. The result is smoother shifts, stronger acceleration, and confident towing performance that works with your modifications instead of against them.
Fitment: 2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
Notes:
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| Property | Values |
|---|---|
| Year Ranges | 2011 |
| Make | GM/Chevrolet/GMC |
| Model | Silverado/Sierra |
| Series | 2500HD/3500HD |
| Engine | 6.6L Duramax LML |
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