HEI Rev Limiter SBC & SBF

Protect your engine from over revving with the DUI Rev Limiter. This soft touch Rev Limiter uses sophisticated circuitry to drop spark one cylinder at a time once the engine reaches the set limit. Alternating cylinders are then fired to prevent fuel load up. The result is smooth, accurate rev limiting action that prevents backfires and possible engine damage. Rev control is adjusted with replaceable plug-in modules. Supplied modules are 6000, 7000 and 8000 RPM’s but additional RPM limiting modules are available in separate kits. The marine version includes a 5000, 5200 and 5500 RPM module. Works with all HEI and DUI Distributors on 4, 6 and 8 cylinder engines.