document.writeln('<dl><dt><b>manifold absolute pressure sensor</b></dt>');
document.writeln('<dd>Almost always refered to as a "MAP sensor," this device measures');
document.writeln('air pressure in the');
document.writeln('<a href="/glossary.shtml#intakemanifold">intake&nbsp;manifold</a>.');
document.writeln('Pressure can be positive or negative. Positive pressure we call');
document.writeln('<a href="/glossary.shtml#boost">boost</a>, measured in pounds per square');
document.writeln('inch, or <a href="/glossary.shtml#psi">p.s.i.</a> Negative pressure we call');
document.writeln('<a href="/glossary.shtml#vacuum">vacuum</a>, measured in inches of');
document.writeln('mercury, or <a href="/glossary.shtml#inHg">in.Hg</a>.<br>');
document.writeln('<font size=1><i>by Randy Hicks</i></font></dd></dl>');