Review on Enhanced Control Unit: Standard Motor Products AC543 by Prince Burr

item delivered on time and fits perfectly. In fact, it came with an o-ring and gasket to fit any throttle body design. Replaced OEM TPS on 4.7L engine. Eliminates "hunting" at idle, harsh shifts, and overdrive 'on' and 'off'. Before installing the valve, make sure the air control port is not contaminated with carbon. Very happy with the results. Why not 5 stars? American Fulfillment Services' shipping packaging was grossly inadequate. The box was thin, the ends of the package were folded but not sealed. Luckily nothing was lost. Also, the price displayed in the window was different from the one I was given.