Find great deals on eBay for msd 7531. Shop with confidence. Skip to main content. eBay Logo: MSD 7531 Digital-7 Plus Programmable Digital Ignition Control Map Sensor Is Req. See more like this. MSD Ignition 7531K1 Digital 7-Plus Ignition Kit. MSD's Pro Data Software is one of the most popular ways you can control your MSD ignition for your race car or street car. However, learning how to use it DOES INVOLVE a learning curve. Whether it's setting up basics functions such as a rev limiter, or learning how to use traction-aiding functions such as the slew-rate or rev limiter over time - it pays to listen to an expert. We are running the 7531 with step retards via activation through wires. When we activate step 1 it retards 2 degs and then with step 2 it retards another 3 deg. for a total retard of 5 deg. We set the "off" time to .20 sec for both. So basiclly we want the retard to be on instantly when activated and then ramped up to NO retard, just as the manual stated. Find great deals on eBay for msd digital 7 7531. Shop with confidence. Skip to main content. eBay Logo: Shop by category. 1 product rating - MSD 7531 Digital-7 Plus Programmable Capacitive Discharge Ignition Control Box. $929.95. Buy It Now +$17.10 shipping. Video 2 of 5. Joe Pando from MSD reviews the advantages and uses of adjusting Rev Limiters and Step Retards using the Pro Data Software. - SUBSCRIBE to the P This illustrates what changes need to be made in the 7531 data editor screen when using a 7531 to an MSD 8, 10, or Pro Mag. Read More. 2Timing By: Miguel Angel Tapia | 03/21/1999. Buy MSD 7531 Programmable Digital-7 Plus CD Ignition Box: Control Units - Amazon.com FREE DELIVERY possible on eligible purchases If you're a consummate engine tuner and know how to take advantage of minute changes in timing during a quarter mile pass, then the Programmable Digital-7 Plus is the ignition for you! Msd 7789 1 msd digital 7 plus 7531 msd digital 6al ignition controllers 6425 shipping on