Abstract: A multi-function, composite apparatus for mounting on a drag racing vehicle is described which includes: (i) a terminal panel having leads coupled to various vehicle control components of the vehicle to affect operation of the vehicle; (ii) a display means to depict a plurality of different racing indicia selectable by a user wherein at least one of said indicia relates to vehicle performance during racing such as delay box timers, throttle stop controllers, cross over delay timers, etc. and a second indicia relating to a non-racing function such as driver reaction time tester or race playback function; and (iii) a keypad having a plurality of user-operable keys including function keys to control what indicia is shown on the display means and data input keys to modify the data in the apparatus. All required outputs can be shown on a single visual display means.

Abstract: A device for controlling the release of a drag racer which is adapted for use in elapsed time starts as well as standard starts. The race crew inputs the opponent's established elapsed time and their own established elapsed time into the invention, as well as the standard timing-light/reaction-time delay. The device then calculates the handicap by which a faster car will be held and adds that time to the timing-light/reaction-time delay. This permits the driver to begin release timing from his opponent's Christmas tree lights. The driver may use his own Christmas tree if he wishes by setting the ET timers to zero, to equal values, or by setting the opponent's ET lower than his own.