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Date: Sun, 31 Oct 2004 21:31:51 GMT
From: Johannes H Andersen <johsnospamfitter.com>
Subject: Re: 9000CS Low boost turbo...more





KeithG wrote:
> 
> trionic doers not have a knock sensor. Knock is sensed through the DI
> cassette. Base boost can be caused by a bad DI cassette, but consistent
> base boost is most probably mechanical or the BPC valve.

The spark plugs are used for measuring the pre ignition conditions in
the cylinders. An ionization current over the plugs is analyzed by the
ECU and used for optimal timing and other engine parameters. something
like that...
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