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Old 21st January 2020, 11:07   #6
Sheraton
Posted a thing or two
 
Rover 75 1.8t

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Quote:
Originally Posted by LeRich View Post
Nothing wrong with the scanner. MAP is 22PSi, not Boost. I suspect Boost @ 22PSi would result in an exploded engine.


that will be something new i've learned


I think it makes sense - Positive Boost is measured in Relative Pressure

Absolute Pressure includes the Relative Pressure Vacuum (negative readings on the Boost Gauge)


My Boost Gauge (reading from the Inlet Manifold next to the MAP sensor) shows Idle around -10 PSI to Full Boost around +12 PSI.

this would give an Absolute Pressure Reading of 22 PSI. ?





Paul.
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