The Edelbrock E-Force Supercharger Stage 1 Street System part # 1565 for 2014-16 Silverado, Sierra HD 1500 & 2014-16 Suburban, Tahoe, Yukon & Yukon XL increases the performance of your 5.3L Gen V engine to 445 horsepower and 421 ft/lbs. of torque at the rear wheels. The core of this system is the Eaton Gen VI 2300 TVS Supercharger rotating assembly with a four lobe design with 160 degrees of twist for maximum flow, minimum temperature rise and quiet operation for excellent drivability. We also designed our superchargers with an integrated bypass valve to help eliminate parasitic loss under light throttle, improving mileage potential. Our unique and efficient inlet configuration results in a shorter, less restrictive intake path for improved air flow, without the need for a jack-shaft. Keeping the air cool is a high capacity air to water intercooler and low temp heat exchanger. The Edelbrock #1565 system is emissions legal and provide the best combination for your daily driver. The supplied tune is intended for completely stock vehicles with the exception of a cat-back exhaust. This kit will include a tune for 91 or 93 octane fuels.