Throttle Body Flow Booster Horsepower for Chevrolet Corvette (1985-1996) 5.7LHigh Flow Throttle Body Flow Booster for 1985 1996 Chevrolet Corvette Improves engine breathing: Mounts inside the factory throttle body to eliminate intake tract turbulence, increasing total airflow by 30 CFM for measurable horsepower and torque gains. The Stock Corvette Intake Bottleneck The factory twin port throttle body on the C4 Corvette's 5. 7L engines suffers from a blunt center divider between the primary butterflies. As intake velocity