Re: APC - does it adjust ignition? - Saab 900 Bulletin Board - Saabnet.com
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Re: APC - does it adjust ignition?
Posted by Bill U (more from Bill U) on Sun, 10 Jun 2001 11:43:57
In Reply to: APC - does it adjust ignition?, Anders DK, Sun, 10 Jun 2001 11:29:14
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If your 88 is the same as my 87, igntion advance is strictly vac controlled. APC controls boost by bleeding off pressure going to the wastegate, allowing higher boost than the wastegate setting in most situations. The connection to the dist is an information input to the APC, as boost is allowed to be higher at low rpm, and tapers off as rpm rises.
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