I Just Got My Sprint Booster From Jrp For $330, I Installed It With The Instructions From This Forum. I Have Never Experienced A Product Like This, Everything Is So Responsive It Feels Like Your Putting A Shot Of Nos Every Time You Press The Gas Pedal And Make Sure You Hold On Because Your Foot Will Jump Of The Pedal From The Torque, This Sprint Booster Is Not Known To Increase Hp But It Feels Like It. As Of Today I Shipped My Ecu To Tvt Design For The Tvt 265 Package I Hope That It Makes Me As Happy As The Sprint Booster Has.