RPM Limiter Ignition Correction

Nexus Series Firmware Help › Ignition Tuning › CorrectionsUpdated Sep 2026

As an engine closes in on the rev limiter, a small timing change can make the limit feel smoother. This table is where a Nexus ECU sets that change.

What this table does

The RPM Limiter Ignition Correction table sets how many degrees of timing the Nexus adjusts as engine speed approaches the rev limiter. It works alongside the limiter itself, shaping ignition timing in the last stretch before the cut rather than leaving the limiter to act alone.

When you'd use it

Most people reach for it when the limiter feels harsh or abrupt, or to take the edge off power right before the cut. It's one of several ignition corrections in NSP, alongside corrections like air temperature and gear. There's a matching fuel-side RPM limiter correction too.

What to check

  • Log ignition timing and RPM as you approach the limiter, and confirm the correction is applied where you expect.
  • Start with small changes and confirm the effect in the logs before adding more.
  • Watch exhaust temperatures if you're pulling a lot of timing near the limit.

Want a screenshot of this table or help setting it up? Ask us and we'll send it over with advice for your build.