Date: Sun, 27 Mar 2005 08:01:52 GMT From: "James Sweet" <jamessweetnospamail.com> Subject: Re: occasional use of high octane petrol
> APC was only fitted to Saab 8V 900's with turbo-equipped engines as far as > I'm aware. The ones that didn't have turbo's (such as mine) don't have APC. > I think APC was a standard part of the equipment for 900's with 16V engines > regardless of whether they had a turbo or not, but I'm open to > clarification. > APC works by controlling the turbo boost pressure and allowing it to go as high as it can before detonation occurs. Only turbo cars had APC, without the turbo there's nothing for the APC to control. The other 16v engines do have knock sensors, but it controls the ignition timing only.
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