MSD Ignition Digital-7 Plus Programmable Digital Ignition Control Features: The Most Advanced Ignition Control Available Program Rev Limits And Step retards Map A Timing Curve For Each Gear Individual Cylinder Timing Adjustments Program A RPM Limit Or Launch RPM Limit Map Record And Review Ignition Data Acquire 20 Seconds Of Run Data Height: 4.00 Width: 12.00 Length: 8.00 Weight: 6.70 lbs Fitment: UNIVERSAL 0 - 0 NON APPLICATION SPECIFIC