Engine protection is obviously paramount and this comes in the form of a rev limiter. Connected to the coil, this device disrupts the firing pattern if a pre-determined rev limit is reached. Microprocessor-controlled, the unit is configurable for 2, 4, 6 or 8 cylinders. Unlike many offerings, the manner in which the revs are limited is smooth and progressive before hitting a hard limit. Limitations do apply if you are running an ECU-controlled ignition system, so please check prior to purchase.
Once installed, the rev limit can be easily set in 100rpm steps via buttons mounted on the front of the unit which can then be tucked away out of sight behind the dashboard. Since the unit does not rely on external information for setting and so removes errors due to tachometer and reading inaccuracies.