Street Tune Only for EFI Live Spade - LML (2015)

If you have been itching to see what your 2015 Silverado or Sierra 2500HD or 3500HD is really capable of, this Sport Tune delivers the kind of punch that puts a grin on your face every time you hit the throttle. With gains of up to 135 horsepower and 243 lb-ft of torque, total output climbs to an impressive 532 horsepower and 1008 lb-ft at the crank. The truck accelerates harder through every gear, throttle response is instant, and that sluggish dead pedal feeling is completely gone. Shifts feel firmer and more decisive, which makes the whole truck feel tighter and more performance focused. Even with that added output, your emissions equipment remains fully intact and the calibration is 49 State Legal. This is the strongest legal power level available for the LML without stepping into delete territory. For owners planning future upgrades or simply wanting the most performance available while staying compliant, this tune hits that sweet spot. Under the surface, this is not a generic canned file but a fully customized calibration from DuramaxTuner.com with more than 100 changes from stock programming. Fueling, torque management, and shift behavior are carefully revised to deliver aggressive acceleration while maintaining responsible control of engine parameters. The included EFI Live AutoCal V3, also known as the SPADE device, allows simple OBD flashing along with professional level data logging for monitoring and diagnostics. This setup supports multiple VIN licenses and provides the flexibility to update your truck as modifications evolve. While you can tow with this tune, proper gauges including EGT monitoring are strongly recommended due to the increased output. Pairing the Sport calibration with recommended TCM tuning improves torque converter lockup strategy and clutch holding capacity, helping put that extra power to the ground effectively. For trucks equipped with lift pumps, upgraded fuel components, or built transmissions, this tune provides a strong foundation that works with your hardware instead of against it.