The Edelbrock E-Force Supercharger Stage 1 Street System for 2011-13 Silverado and Sierra HD 2500 increases the performance of your 6.0L Gen IV engine to 399 horsepower and 395 ft/lbs. of torque at the rear wheels when used with Edelbrock tune (kit supplied without a programmer). Keeping the air cool is a high capacity air to water intercooler and low temp heat exchanger. HANDHELD PROGRAMMER NOT INCLUDED.
