Re: Low Boost Issues - Saab 9000 Bulletin Board - Saabnet.com
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Re: Low Boost Issues
Posted by Simon S (more from Simon S) on Thu, 21 Nov 2013 08:31:50
In Reply to: Re: Low Boost Issues, RadioFlyer, Thu, 21 Nov 2013 06:49:17
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Yup - and overboost could have melted the Cat too.
Now, a manual boost controller can be used in a lot of different ways - usually they're bad ways...
If they're using it to raise the waste gate pressure in absence of boost control from the computer, you loose a measure of safety provided by the ECU. In this application, having it "completely closed" would cause overboost all the time - same as not having any plumbing attached to the WGA.
... car boosts beyond ECU spec, leans out and gets hot, pings, ECU pulls back timing, exhaust gets hotter... you see where this is going...
posted by 67.189.7...
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