The Edelbrock E-Force Supercharger system #1566 delivers excellent horsepower and torque in a complete kit. Featuring a unique design with minimal components. It makes it possible to fit an E-Force Supercharger under the stock hood. The core of each system is the Eaton Gen VI 2300 or 1320 TVS® Supercharger rotating assembly with a four lobe design with 160° 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. Edelbrock supercharger systems are available in three performance levels for most applications. Systems #1560, #15600, #1561, #15610, #1577, #15770, #1578, #15780, #1579, #15790 require an Edelbrock Supplemental Fuel Pump Kit (sold separately, see below). Failure to use a Supplemental Fuel Kit may result in engine damage and will void your warranty. #15790 will also fit 2007-08 1500 series trucks with a 6.0L engine (requires custom tune). Supercharger systems sold without tuners are only emissions legal when used with the correct Edelbrock program, which can be downloaded at www.edelbrock.com. For safety, the Edelbrock supplied program will retain the factory vehicle speed limiter setting. ALL 2017-Later GM Truck & SUV Supercharger Systems WILL REQUIRE the ECM to be sent in for modification... NO HANDHELD PROGRAMMER INCLUDED. This process can take up to 5 days from the time your ECU is received!