Fuel metering on T7 - Saab Performance Bulletin Board - Saabnet.com
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Fuel metering on T7
Posted by Ravi (more from Ravi) on Wed, 7 Feb 2001 18:48:23
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Interesting to read the discussion on recirculating vs. direct to atmosphere BPVs. The argument is made that you can't dump air that has already been metered via a mass air meter out of the plenum, since the cpu has already accounted for it. But what about the fact that all metering is not done solely by a preprogrammed recipe ? There is an O2 sensor (2 actually) that must have fine tuning capabilities for the air-fuel ratio. What lattitude does this have ? This is relevant for lots of tuning applications beyond just blow off valves or BPVs.
P.S. Anyone know why there are 2 MAP sensors on a '00 9-3 ?
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