msd sci ign. box Powerful spark at any rpm.
Ignition Box, MSD SCI, Analog CD, Sport Compact, Silver, Each
At higher rpm, stock inductive ignitions cannot produce full power sparks, resulting in a loss of power or misfires. That's where the MSD SCI and SCI-L ignitions come in. They feature CD circuits that deliver powerful sparks at over 10,000 rpm. They're always at full power! Below 3,000 rpm, the SCI ignitions produce a series of sparks that last for 20 degrees of crankshaft rotation. That gives you smooth idle, quick starts, and even faster throttle response. The SCI-L ignitions have the same features as the SCI ignitions, plus the added bonus of an adjustable rev limiter.