MustangWorks.com : Ford Forums - View Single Post - cheap way to upgrade to a 73 mm MAF meter

Adam94GT · 07-20-2003, 12:02 AM

Pro-M and C&L make meters that are calibrated for the cross-sectional area that the air has to flow through. Factory meters which included the post are not calibrated for the area without the post. So there will actually be more air flowing through a stock meter with the post removed than the meter believes. This means there is more air flowing than the fuel system will be providing for, this should be fairly easy to understand. This leans out your mixture, and I'm sure you know what leaning it out does.

On another note, does anyone know what size a factory '94 Mustang 5.0 MAF is? I tried measureing the inlet mouth and came up with 80mm but that seems a little big for stock. Even with the post.

07-20-2003, 12:02 AM	#7
Adam94GT Registered Member Join Date: Jun 2003 Location: O'Fallon, MO Posts: 32	Pro-M and C&L make meters that are calibrated for the cross-sectional area that the air has to flow through. Factory meters which included the post are not calibrated for the area without the post. So there will actually be more air flowing through a stock meter with the post removed than the meter believes. This means there is more air flowing than the fuel system will be providing for, this should be fairly easy to understand. This leans out your mixture, and I'm sure you know what leaning it out does. On another note, does anyone know what size a factory '94 Mustang 5.0 MAF is? I tried measureing the inlet mouth and came up with 80mm but that seems a little big for stock. Even with the post. __________________ ----------- Adam M. Bullard 1994 Ford Mustang GT Too many mods since last E.T. http://www.geocities.com/adam94gt