I'm looking for...

I'm looking for the "Mass Air Sensor" on my 91 honda prelude SI 2.1L
I bought a Chilton's book, and i can only find the "heated oxygen sensor" which is located before the Catalytic convertor. I got a tip from a friend to put a resistor in between the wires on the Mass Air Sensor, to trick the ECU and increase the air/fuel mixture for maximum performance. Thanks guys/girls.

ok i need to know on the MAP(Manifold Absolute Pressure) sensor, there are 3 wires: white and blue, blue and white, and pink and white. i need to know what each are; one should be ground, positive, and the sensor wire. anyone know? i can't find it in Chiltons