WTB MAF ...

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Jul 21, 2009 | 12:44 AM

rattlsnak

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From: Atlanta

WTB MAF ...

Anyone have a spare Mass Air Flow sensor laying around??

Jul 21, 2009 | 01:45 AM

groovzilla

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From: Seattle, Washington

there was a guy on ebay selling a parted out 91 coupe that had had several engine parts for sale cheap...mass airflow was somewhere in the $80 range...i'll try to search for you to see if its still around

Jul 21, 2009 | 01:48 AM

groovzilla

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heres one for $99 buy it now:
http://cgi.ebay.com/ebaymotors/PORSC...Q5fAccessories

Jul 21, 2009 | 06:49 AM

Duck

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Do you need a MAF or AFM? The ebay item is a AFM.

Jul 21, 2009 | 11:40 AM

groovzilla

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**the ebay item above is a mass airflow sensor..

heres another MAF on pelican parts:
http://forums.pelicanparts.com/showthread.php?t=486275

Jul 21, 2009 | 02:14 PM

springer3

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From: Atlanta

Quote:

Originally Posted by groovzilla

**the ebay item above is a mass airflow sensor..

heres another MAF on pelican parts:
http://forums.pelicanparts.com/showthread.php?t=486275

There is a terminology problem. Those are both AFMs, which use a spring-loaded door to sense air flow. The MAF uses a hot wire anemometer to measure air flow.

The AFM has small errors in mass flow measurement when the temperature, humidity, or atmosphereic pressure are different from the conditions when the AFM was calibrated. MAF sensors on the other hand respond to true mass flow under all conditions. Fuel combustion ratios are mass ratios, and therefore a MAF sensor provides a signal that better reflects what is needed to set the engine controls. The errors are small, but a MAF-equipped engine can be tuned for slightly better emissions and fuel economy.