Quote:
Originally Posted by Jayhovah
I don't think I've heard of anyone getting an accurate boost reading for our cars.. On mine I think it stops at 1psi or something, but I also do not have an upgraded MAP sensor so it would be impossible to get the reading in my case. I have asked others that are tuned via speed density and have proper MAP sensors but haven't heard of anyone getting an accurate boost reading from OBDII.
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From my experience as an Instrument Tech, that sounds like the sensor is the wrong range (looks like your sensor maxes out at 1 psi) and/or the ECM hasn't been re-scaled (not sure that it can be re-scaled).