Knock Retard
Ignition
ignition timing pulled back to prevent knock — When knock sensors detect detonation, the ECU pulls back ignition timing (e.g. -2°, -4°, -6°). Visible in datalogs as KR or knock retard. Persistent knock retard means tune is too aggressive or fuel is bad.
Tune Knock Retard with DaVinci Deluxe
Professional ECU tuning software. €299 lifetime, or test it first with the Real Software Test: €9.99 for 7 days, then €100.99/month unless you cancel in one click.
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