The new VR-SC1R Snake Charmer for the LS3/LS7 represents the culmination of input and testing from racing teams, top tuners and a relentless R&D program. 1/4 mile improvements of 3.5 tenths and 3.5 MPH with no tuning!! Simply plug and play! Noted improvements in both driveability and fuel mileage! The unit is made of high quality cross link material and unique with its Billet Air Meter, Green High Performance Filter and Redesigned Air Scoop!