I was looking on electrical diagrams and it seems that maf sends signal from pin5 to ECU pin17. What kind of signal is it? I have read how maf works but it seems to have a solid state device inside that converts current needed to heat hot wire to some other signal that is sent ECU pin17. What kind of signal can it possibly send to ecu? It has to be some voltage that varies with amount of air passing through maf. I want to get to basics of my lean conditions. Also I have new universal O2 sensor from Bosch. Hopefully it will improve something.

Another question is can one adapt MAF from m104 engine to work with m119 engine? m104 mafs are way cheaper than m119 engines. I have no problem with resoldering the plug to fit m119 plug, but I have doubts about m104 maf ability to calculate extra air that m119 use. Also does m104 maf has same dimensions as m119 maf?

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1999 ML430 Silver 135k ml
Smoked LED taillights, Alpine in-dash DVD player, 12" sub, Pioneer components, 2 amps, 4200k HIDs, ML55 headlights, 20" rims, mirror LED blinkers

SOLD. 1996 E320 145k ml. Burgundy

SOLD but miss it everyday 1992 500sel Black
Chime buzzer mod,Alpine CD/MP3 player with stock amp,Euro headlights,S600 grill,20" rims, BEST CAR EVER!

SOLD. 1990 300E White
187k ml,smoked tails,Euro headlights,17rims,Intake,12" sub in first aid kit,alarm/autostart,buzzer mod