Davis Unified Ignition Rev Limiter - Works w/ All Davis Unified Ignition Distributors 11043PRB The pickups are placed precisely

The pickups are placed precisely 180° apart so when you switch to the secondary ignition

Spacers work with 1-3/4" bolt circle flanges only

RVs and boats

Instructions for the 30-4100 will still be available in the Instructions tab after this change

1987-2001 Jeep Cherokees and 1987-1992 Comanches with 4

Davis Unified Ignition Rev Limiter - Works w/ All Davis Unified Ignition Distributors 11043PRB The pickups are placed preciselyD. U. I. Rev Limiter Compatible with All DUI HEI Distributors Includes 3000, 6000, 7000 and 8000 RPM Rev Limiting Chips Protect your engine from over revving with the DUI Rev Limiter. The D. U. I. Rev Limiter drops one cylinder at a time very smoothly. This prevents fuel from loading up on the plugs. This also avoids backfires and engine damage. Set your RPM limit with plug in modules. a 6000, 7000 and 8000 RPM module is included with the rev limiter.