CRC Throttle Body & Air-Intake Cleaner cleans gum and varnish from the throttle valves and throttle body for easier starting and smoother engine performance. - Cleans power-robbing gums and varnishes from the throttle bodies - Eliminates Hesitation & Rough Idle - 360° valve for easy access in any position - Removes Harmful Deposits For fuel injected gasoline engines (both throttle body & multi-port). Use every time you service your air filter. Use with MAF Sensor Cleaner. Thanks @FlyingSparksGarage !