Quote:
Originally Posted by MikeSVX
It's a vacume gauge also. So it has a use on non boosted engines as well.
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We know that it can read vacuum. Why doesnt it read vacuum(inHg) instead of PSI is the question. The gauge itself reads 12PSI max, down to 0, then -12. -12PSI doesnt make any sense and neither does 12inHg(Not enough) if thats what they were implying. Pretty sure its just there for testing at this point.