TPI Specialties 1.AF001 - TPIS Throttle Body Airfoil

Many hours of flow-bench and dyno testing followed up with comprehensive road tests proves this air foil will give you better throttle response, an 11.8 horsepower increase and 36 more CFM. Installs in less than ten minutes in 85 and up GM TPI and LT1 throttle bodies and carries a lifetime guarantee.