The ECONOAID Throttle Body Booster is a non-moving aluminum plate that mounts between your engine's throttle body and intake manifold. The patented 0.032 inch thin plate is made from 5052-H32 aluminum which is stamped and formed with CNC equipment that shapes and contours the unique air directing vanes. The ECONOAID Throttle Body Booster spins the incoming air as it passes through the many aluminum blades. The spinning air charge is carried through past intake valves for better atomization and more complete combustion. The ECONOAID Throttle Body Booster will give you a crisper throttle response along with better engine efficiency. The results of this efficiency device will always vary depending on vehicle type, driving habits as well as many other factors. ECONOAID Throttle Body Boosters are made in the USA and backed by AIRAID's 123-day money-back guarantee. This product is 50 state emissions legal.