AIRAID 1028 Throttle Body Booster Spins intake air through throttle body and into intake valves Better atomization of fuel for better combustion and engine efficiency Increases low-end throttle response Emissions legal in all 50 states Installs in 30-45 minutes Econoaid Throttle Body Flow Booster Better Gas Mileage Average Vehicle Will See An Extra 1-3 MPG No-Hassle Warranty Made in the USA