The Edelbrock E-Force Supercharger Stage 1 Street system for 2005-07 Chevy Corvette increases the performance of your LS2 engine to 554 horsepower and 515 ft/lbs. of torque at the crank. 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. 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 octane fuels.