First, the throttle bodies are dissasembled, that includes all the sensors and all moving parts. Then the throttle body is sand blasted with ultra fine sand. It is then cleaned and all sand is removed. The throttle body then goes to the lathe, where it is bored, then ported and finally polished. the opening of the throttle body gets a taper that begins at 6 degrees then 3 degrees. A new bigger butterfly is made out of brass. It is then carefully fitted to the throttle body. Once the proper seal is achieved the throttle body is reassembled. The throttle position sensor (TPS) is reinstalled using new screws and it is set to factory specs.

No cores used, your own TB and/or IM will be sent back to you!

Manifold opening port matching service is also available.