VF-Engineering designed this kit from the ground up using the “bullet proof” Vortech Engineering V3 supercharger unit. The key to the design of this supercharger kit is the simplicity in which it can be bolted-on. The kit is a direct bolt-on system that includes every part needed to supercharge your VR6. Power from the silky smooth VR6 engine is increased from 170hp to 280hp and torque from 170 ftlbs 250 ft. lbs of torque .The VF-Engineering approach to kit design and experience has created a bolt on kit with incredible smoothness and drivability. The Mass Air Flow sensor has been relocated and a boost overrun valve (pressure relief system) incorporated, so it may be “tuned” for optimal part throttle and off-throttle deceleration. OBD1 and OBD2 have both been fully homologated with this kit which idles and accelerates as a VR6 should – smoothly and relentlessly. The kit was set up in 2 stages to give you an increasing amount of horsepower and torque. Stage 1 has been discontinued in favor of the demand for a Stage 2 only .Stage 2 includes replacement, direct drop-in Bosch high capacity injectors. The boost is set at 8psi giving a reliable and punchy performance.