Computer Diagnostics and Tuning Technical discussion on diagnostics and programming of the F-body computers

MAP vs KPA ...

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Old May 26, 2006 | 11:10 AM
  #1  
canbaufo's Avatar
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From: Charleston, WV, U.S.
Question MAP vs KPA ...

...just splitting up some quetions since my original "pe vs rpm used in open loop" thread is getting so long .....


When I cruise around the Scanmaster displays "MAP" readings of about 8 - 15 ...this is obviously not the same "MAP" as the BLM control MAP where it says "minimum MAP for BLM update" ......so .....just what is that "MAP" on the Scanmaster ...just a signal of some kind? ...it couldn't be KPA. I think the MAP values in the BLM control area are actually KPA, do I have this right?
Old May 26, 2006 | 12:05 PM
  #2  
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Re: MAP vs KPA ...

It looks like it is displaying in.Hg (inches of Mercury). Those numbers are about the right values considering atmospheric is about 30 in.Hg.

Benji
Old May 27, 2006 | 08:11 PM
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Re: MAP vs KPA ...

Its all explained in my online ScanMaster writeup.... ScanMaster displays MAP in "Hg. You need to convert "Hg to kPa to compare the MAP value to the kPa Cell boundaries. You will have the same issues with the other tables that reference MAP... e.g. - timing advance, because the tables are all in kPa.

http://members.aol.com/InjuneerZZ/ScanMast.htm
Old May 30, 2006 | 09:21 AM
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canbaufo's Avatar
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Re: MAP vs KPA ...

Thanks Inj. ...I actually have your writeup saved, just haven't looked for awhile. lol, I noticed after posting this that on Datamaster it says "MAP (KPA)" or something to that extent.
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