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Old 07-27-2006, 04:10 PM   #14
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Member#: 27108
Join Date: Oct 2002
Chapter/Region: MWSOC
Location: Detroit-ish, MI
2004 STi
2004 A4


Originally Posted by SloRice
Why is it capped by the UTEC at 12psi? I don't understand this.
That's the UTEC's FCD (fuel cut defender). A stock factory ECU will throw a CEL and limit boost if it sees 17psi for a few seconds.

Originally Posted by SloRice
So according to what you are saying, I don't really care what the stock MAP sensor is doing and whether or not the ECU cares what it's doing.
As long as the factory ECU gets *a* signal, you don't really need to worry about *what* the signal is, provided that it's not causing an overboost CEL.
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