Heavy Tow Tune Only for EFI Live Spade - LML (2015)

If your 2015 Silverado or Sierra 2500HD or 3500HD spends more time hooked to a trailer than cruising empty, this Heavy Tow Tune was built with you in mind. Instead of chasing peak numbers, this calibration focuses on usable power that makes hauling feel easier and more controlled. You gain up to +40 rear wheel horsepower and +72 lb ft of torque, which helps get heavy trailers moving without excessive throttle input. Additionally, SMART EGT control actively manages exhaust gas temperatures so you can pull long grades with confidence. The revised pedal sensitivity makes low speed maneuvering smoother, which is a huge advantage when backing into tight job sites or lining up a gooseneck. Factory turbo brake functionality is fully retained, giving you added control on downhill stretches. For drivers who tow through hills, mountains, or rack up serious miles each year, this tune delivers strength where it counts most.