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Ignition trim comp table

Practical Dyno Tuning

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What is the common practice/ rule of How many degrees of ignition timing should be removed / added for ait compensation? If there is one. Thank you

I don't have a rule as such as it will depend to a degree on the knock sensitivity of the engine. If the engine is very sensitive to knock, you will likely need to be more aggressive with pulling timing as the IAT increases. I'd recommend doing some testing with a higher IAT and seeing how the engine responds. You can always block the intercooler on a turbo car or funnel hot air from behind the radiator to simulate higher IAT.