Spark cut rev limiters are the same idea, but they do it when you're ON the gas and hit the limiter. It's safer than a fuel cut rev limiter because it won't lean out like a fuel cut. 2-stage rev-limiter is nice for consistent drag launches. Hold it at a pre-determined rpm for launch until everything is hooked up, then release for full band.
Anti-lag systems do it when you're off the gas and rpm drops.
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