The PSI supercharger is the first Roots blower to power Top Fuel cars to over 336 mph in 4.4 seconds elapsed time. The PSI Roots blower makes an unforgettable impression in competition racing where allowed, setting and breaking records in Top Fuel racing. The special rotor profile design has significant advantages over competing products.

Strict geometric tolerances allow for parts interchangeability between blowers with ease. Designed for the special requirements of competition, it has significant advantages over all other blowers:

Instantaneous throttle response: The rotors have less leakage than any other supercharger resulting in full boost sooner Cooler manifold air extends crank and piston life and reduces detonation

Rotors flex less reducing tip strip wear and leakage

Higher efficiency means more engine power at all engine speeds

Lower cost of ownership: The PSI's durability and reliability
results in lower maintenance cost.

Timing. PSI rotors don't go out of time