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Viggen overboost/Dean
Posted by Ed Smith (more from Ed Smith) on Tue, 16 Sep 2003 12:51:01
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It appears the ECU is rebelling against the MBC. Anything now approaching 15 psi gets a default to overboost. It appears this is a learned response, as it happens almost instantly now. Our best guestimate on this end is that the stage 3 program has expanded the limits to the point that when a sudden pressure change occurs, it defaults to overboost instantly for a failsafe. We are going to take an incident picture from the tech 2, transfer it to a disc, and run it on the Saab/GM computer in Atlanta the first part of October. Hopefully, this will show what's happening with no guesses on my part. How does this sound to you?
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