How to win
Every RPM point has a hidden sweet-spot fuelling. Land on it and that part of the curve makes its best power. The dyno tells you what each cell did:
ideal nailed it · rich a little wasted, safe · lean down on power, getting risky · knock too lean — detonation.
Rich is safe but slow; lean is fast right up until it isn't. Nudge the lean cells up until they flip to ideal, and back off anything that knocks. Peak power almost always lands in the upper mid-range, where airflow is strong and the revs are climbing — that's the cell to perfect.
FAQ
Is this how real ECU tuning works?
It's a simplified take on the real idea: an engine makes best power at a particular air-fuel mixture, richening slightly for safety and cooling, and detonating if pushed too lean under load. Real tuning adds ignition timing, boost, knock sensors and a lot more — but the fuel-vs-power-vs-knock trade-off here is the heart of it.
Does my score save?
Your best peak power is stored in your browser (nothing leaves your device). Clear your site data and it resets. Hit Copy result to grab a shareable line for the forums.