FAST E6 CD Ignition w/ Dual Stage Rev Limiter Two adjustable rev limiters; one for over-rev protection, the second for a launch RPM Timing is held to within a half degree, and the rev limiter is accurate within 30 RPM Multi-strike CD ignition produces high output through redline RPM. Sequential rev limiting technology produces smooth, accurate rev limiting action Compatible with carbureted and EFI engines. Works with FAST E92 and E93 ignition coils Made in the U.S.A