MSD Programmable Digital-7 with Boost Retard Curve
The programmable Digital-7 Ignition Controls are a favorite of drag racers ranging from street classes to professional pro stock racers. With the advances in EFI technology, more turbo and supercharger systems, a lot of racers want to be able to program a timing curve in relation to boost pressure and MSD answers with the new Programmable Digital-7 with Boost Retard! The new ignition has a MAP sensor with a Weathertight connector that plugs into most GM style MAP sensors (not included). This information lets the ignition's microprocessor know the exact boost pressure. From there you can set up a curve down to 0.25 psi increments for every 0.1° through the MSD software on a PC or with the optional hand held monitor (121-7550). All of the features racers have come to expect are still included in the Programmable Boost Ignition. This includes individual cylinder timing, stage retards, RPM limits, shift points and more. The race proven output of the ignition is stout 190 millijoules of spark energy with a primary voltage of 535 volts. Plenty of oomph to light a fire in a cylinder with high boost pressures! For even quicker computations and management capabilities this ignition uses a 40Mhz RISC microprocessor - the most powerful of any digital ignition! A MAP sensor is required for the boost circuit. The ignition is supplied with wiring harnesses, mounting hardware, an RS232 computer harness and the Pro-Data+ software on a floppy disc. (The hand held monitor 121-7550 can also be used for programming.) It will accept trigger signals from a points/ECU output or a magnetic pickup. The recommended coils are 121-8251 or 121-8261.