oem map?did a search
07-08-2005, 01:58 AM
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Re: oem map?did a search (jure)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jure »</TD></TR><TR><TD CLASS="quote">thanx man, can somebody confirm that? 
</TD></TR></TABLE>
That's usually how you figure out how much boost xx.xx bar MAP sensor will handle.
1 bar = 29.5 in/hg of mercury = 14.5 PSI absolute
Think of it this way: a map sensor can handle xx amount of vacuum below atmosphric pressure, and xx amount of pressure above atmospheric pressure. You can measure pressure/vacuum in bar, in/hg or psi absolute. Your typical gauge setup usually measures vacuum in in/hg and boost in psi. But the numbers can be interchanged. Absolute vacuum is the lowest reading your MAP sensor can handle. From absolute vacuum to atmospheric is 1 bar/29.5in hg/14.5 PSI absolute. That's how I understand it anyways.
The easiest way I can explain it is to take your map sensor rating and subtract 1 bar. The remainder is how much boost pressure it is good for.
Example:
1.75 bar sensor = good for 0.75 bar or 10.8 psi of boost
2.5 bar sensor = good for 1.5 bar or 21.7 psi of boost
3 bar sensor = good for 2 bar or 29 psi of boost
5 bar sensor = good for 4 bar or 58 psi of boost
</TD></TR></TABLE>That's usually how you figure out how much boost xx.xx bar MAP sensor will handle.
1 bar = 29.5 in/hg of mercury = 14.5 PSI absolute
Think of it this way: a map sensor can handle xx amount of vacuum below atmosphric pressure, and xx amount of pressure above atmospheric pressure. You can measure pressure/vacuum in bar, in/hg or psi absolute. Your typical gauge setup usually measures vacuum in in/hg and boost in psi. But the numbers can be interchanged. Absolute vacuum is the lowest reading your MAP sensor can handle. From absolute vacuum to atmospheric is 1 bar/29.5in hg/14.5 PSI absolute. That's how I understand it anyways.
The easiest way I can explain it is to take your map sensor rating and subtract 1 bar. The remainder is how much boost pressure it is good for.
Example:
1.75 bar sensor = good for 0.75 bar or 10.8 psi of boost
2.5 bar sensor = good for 1.5 bar or 21.7 psi of boost
3 bar sensor = good for 2 bar or 29 psi of boost
5 bar sensor = good for 4 bar or 58 psi of boost
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