Now you can set different rpm points to trigger the shift solenoids. Any transmission configuration can be used (up to a six-speed) with either a 12-volt activated solenoids or pulse signal activated solenoids. Each solenoid activation is programmed in 100 rpm increments. A shift inhibit circuit compensates for tire spin. Works with most any ignition system that can provide a tach signal. Programmable from a PC with MSD's Pro-Data+ Windows based software or with the optional hand held Monitor (P/N 121-7550).