skirkland1980 Posted July 11, 2011 Share Posted July 11, 2011 (edited) I've had a hard time finding a conversion table that is accurate to MS. I set up a vacuum/pressure pump and a gauge and read map through MS. Here are my results ranging from 20" to 10psi. My elevation is about 800ft above sea level PSI/inHg KPa 10psi=172kpa 9=163 8=155 7=147 6=140 5=131 4=125 3=117 2=109 1=103 0=97.9 1inHg=94 2"=92 3"=88 4"=85 5"=82 6"=78 7"=73 8"=71 9"=67 10"=63 11"=60 12"=56 13"=52 14"=49 15"=45 16"=42 17"=38 18"=35 19"=30 20"=25 Edited July 11, 2011 by skirkland1980 Quote Link to comment Share on other sites More sharing options...
FlatBlack Posted July 11, 2011 Share Posted July 11, 2011 What are you using this for? Quote Link to comment Share on other sites More sharing options...
skirkland1980 Posted July 11, 2011 Author Share Posted July 11, 2011 megasquirt tuning Quote Link to comment Share on other sites More sharing options...
Sam280Z Posted July 11, 2011 Share Posted July 11, 2011 Empirical data is good, but in this case there are standard conversion factors. Both your vac/pressure gauge and MAP sensor have error and/or bias. I built this table a while back. pressureconversion.pdf Quote Link to comment Share on other sites More sharing options...
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