The original Auto Shift Control (1-0010) designed by MPS in 1986 has undergone another series of improvements. It is now solid state and 45% smaller than the previous unit. The new unit measures only 5" x 2 1/2" x 2 1/8". The MPS Auto Shift Control is still the best weapon for good consistent runs. Shift points are the biggest reason for inconsistent runs. It shifts at the same preprogrammed point, run after run. Watch the track and your opponent, not a shift light! The shift point is easily changed using standard MSD RPM chips.