Sold Out Quick view Raxiom Raxiom 11-22 Ford Mustang F-150 Ranger Axial Series SpeedForm Series Throttle Controller - 407056 Compare $59.99 Eliminate your vehicles's sluggish throttle response with a SpeedForm Throttle Response Controller. All modern vehicles use a drive-by-wire system that controls the throttle body electronically, similar to a dimmer switch. While innovative, this design... Currently Out of stock. On order! Currently Out of stock. On order!