Holley Throttle Body Injection Throttle Position Sensor 543-3 | Running an electric choke Holley carburetor and having trouble figuring out how to get that new electronic overdrive transmission to work? Holley has a solution for you. Holley is proud to introduce the new TPS kit for electric choke carburetors. The TPS kit is designed to be used on electric choke equipped Holley carburetors and is perfect for use with an electronic overdrive transmission such as a 4L60E or 4L80E and can also be used for data acquisition. The Holley TPS kit for electric choke carburetors comes complete with all the parts needed for installation along with a detailed instruction manual.