Thread: Overboost code regulator?
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Old Wed, February 3rd, 2010, 02:34 PM
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Technically it really helps to have one. Is it necessary, not really, but the check engine light MAY come on even though no "defueling" is taking place.

It's really a hardware issue at levels above 22-24 PSI because that's all the manifold absolute pressure (MAP) sensor is capable of reading. At that point, the voltage output to the PCM is maxed out and the PCM's voltage threshold has been reached and it can't recognize higher boost anyway.

I would suggest to anyone to run one regardless of who is doing the tuning because physical and electronic limits are limits no matter how you look at it.
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Tuning, PCM flashing, and burning chips for 7.3s since 2008. Repairing all aspects of 7.3L Powerstrokes for 25 years.
Eight 7.3L PSDs in the driveway including a 1994 Crown Vic and 1973 F100/2002 F350. Looking for the next victim.
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