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sperry · 2011-02-11, 10:15 AM

Mass Air Flow = MAF. MAF != MAP. The MAF sensor is the one in the intake just after the air filter that measures air flow (as the name would indicate). MAP sensors tend to be in the intake manifold itself, and measures Manifold Absolute Pressure... i.e. mechanically it's the same as a boost sensor on a turbo car.

Many MAF cars *also* have a MAP, and I know Subaru played around with either/or/both on the Impreza over the years, but I have no idea which cars have which.

2011-02-11, 10:15 AM	#2
sperry The Doink Real Name: Scott Join Date: Nov 2002 Location: Portland, OR Posts: 20,335 Car: '09 OBXT, '02 WRX, '96 Miata Class: PDX/TT-6 The way out is through	Mass Air Flow = MAF. MAF != MAP. The MAF sensor is the one in the intake just after the air filter that measures air flow (as the name would indicate). MAP sensors tend to be in the intake manifold itself, and measures Manifold Absolute Pressure... i.e. mechanically it's the same as a boost sensor on a turbo car. Many MAF cars also have a MAP, and I know Subaru played around with either/or/both on the Impreza over the years, but I have no idea which cars have which. __________________ Is you is, or is you ain't, my con-stit-u-ints?