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      02-12-2013, 11:45 PM   #10
M3takesNYC
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Drives: m3
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Mike do you know which value to use to identify knock? So many variations.

Any thoughts on causes of knock.

For example, even if you have ample octane, and good IAT but have a high load like a decent size hill, is the mapping automatically pulling timing simply because measured load is X even if no detonation is occuring because octane is high and IAT's are low enough? That doesn't pertain to my knocking question but rather what reasons would you not hit your timing targets if your IAT and octane are good (meaning 100 octane or something)?

Related is given good IAT and octane fuel, what other than perhaps load would cause knock to show up?