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Old 09-11-2012, 12:26 AM
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The_Aleman The_Aleman is offline
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Join Date: Jul 2008
Location: el People's Republik de Kalifornistan
Posts: 2,658
Default Re: What exactly is Detonation

Detonation is abnormal combustion. Basically, aftermarket heads and low-octane fuel can cause preignition (early combustion), which is very bad for the piston.

Running too lean and/or running too hot can also cause detonation. To avoid it, you must tune your engine correctly.
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