MSD Ignition 4253 Enhancer Ignition Control Module Fits 90-93 SJ650 Super Jet

Powered by Frooition Pro. Sign Up For Our Newsletter. MSD Ignition 4253 Enhancer Ignition Control Module Fits 90-93 SJ650 Super Jet. Enhancer Ignition Control Module. High Output Sparks Improve Throttle Response. Improve Starting And Top End Power. Direct Plug In Installation. Bolt In Place Of Factory Ignition. (ACC) was founded in 1970 as a research […]