MAF Flow measurement?
06-28-2010, 05:14 PM
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Racer
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Join Date: Nov 2007
Location: Waterloo, Ontario, Canada, eh
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MAF Flow measurement?
Anybody know of a published measurement of the flow characteristics for the 86 951 AFM (barn door)?
I found one for a V8 mustang (http://www.dainst.com/info/maf/ford_mustang_maf.html), and when I fit the data (Voltage Vs. Flow (kg/hr)), the fit is a perfect third order polynomial. Makes me wonder if a single parameter fit (i.e. the 5V output) could match a MAF, assuming the MAF doesn't clip. Are they all third order? It thats a fundamental, then the first generation of MAFs that had 5V outputs should be a question of finding one with a similar curve. Its not like my chipped engine with the 3 bar fuel pressure regulator is still a good match to AFM pot.
Comments?
Regards,
doug
Waterloo, Ontario Canada, eh
86 951 (http://www.pcaucr.org/index.php/visu...egory&catid=61)
01 E320 (W210) 4matic Wagon (http://www.benzworld.org/forums/w210...body-do-2.html)
00 540i-6 (http:// http://www.trillium-bmwclub.ca/forum...sp?postid=1916)
94 855 turbo Wagon (sold in 09)
85 535i-5 (sold in 07)
76 300D (sold in 92)
83 944 (sold in 86)
I apparently only buy cars designated by numbers
I found one for a V8 mustang (http://www.dainst.com/info/maf/ford_mustang_maf.html), and when I fit the data (Voltage Vs. Flow (kg/hr)), the fit is a perfect third order polynomial. Makes me wonder if a single parameter fit (i.e. the 5V output) could match a MAF, assuming the MAF doesn't clip. Are they all third order? It thats a fundamental, then the first generation of MAFs that had 5V outputs should be a question of finding one with a similar curve. Its not like my chipped engine with the 3 bar fuel pressure regulator is still a good match to AFM pot.
Comments?
Regards,
doug
Waterloo, Ontario Canada, eh
86 951 (http://www.pcaucr.org/index.php/visu...egory&catid=61)
01 E320 (W210) 4matic Wagon (http://www.benzworld.org/forums/w210...body-do-2.html)
00 540i-6 (http:// http://www.trillium-bmwclub.ca/forum...sp?postid=1916)
94 855 turbo Wagon (sold in 09)
85 535i-5 (sold in 07)
76 300D (sold in 92)
83 944 (sold in 86)
I apparently only buy cars designated by numbers
