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Discussion of Boxsters and other Porsches

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Message: Just be aware that there doesn't have to be an audible "knock."

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Changed By: Laz
Change Date: December 29, 2010 11:34AM

Just be aware that there doesn't have to be an audible "knock."

You might not hear subtle pre-ignition at all, or perhaps it'll be a trickling noise. Also, I believe octane requirement drops with increasing altitude.

Original Message

Author: Laz
Date: December 29, 2010 11:31AM

Just be aware that there doesn't have to be an audible "knock."

You might not hear subtle pre-ignition at all, or perhaps it'll be a trickling noise.