View The Full Version : doubt on the functioning air mass meter

sportraxxx

hello,as the title suggests, I have a strong doubt on the proper functioning of the air mass meter for my bmw 530d,after having remapped the car has no defect delivery,which I know to be empty or sobs,absolutely linear one issue that has not the performance that is due, I was told that may be he who is guilty....
diagnosis is not giving any error and it is the original of 2004....
how can I test its effectiveness???

franco75

if you have a way to make a log make one and post it.
You must log at least rpm, turbo pressure, and of course, the amount of air.
You take it for a spin and places the log

carlo abarth

if it is not digital, you can measure the volts..if not only with a diagnosis you look at the mass!!!

sportraxxx

if you have a way to make a log make one and post it.
You must log at least rpm, turbo pressure, and of course, the amount of air.
You take it for a spin and places the log
I can certainly do a log and post it,but I would like to know also if remapped reads the real value??
they explained to me that to read the actual value via diagnosis you should put the original map?
I don't know how much there is true...

sportraxxx

if it is not digital, you can measure the volts..if not only with a diagnosis you look at the mass!!!
is movie hot,however I do not know the location of the 4 wires...

munro

the voltage you see it also in diagnosis....strange that both movies warm...usually on those car the maf, and digital and transmits in the ecu a value in pwm...

sportraxxx

but it is true that from the map you can lift up the values of the maf?

munro

you can change the linearization, and make him "read" more air than that actually "law", however, it would be better to put one big...maybe the 535d...and linearizzarlo..

sportraxxx

you can change the linearization, and make him "read" more air than that actually "law", however, it would be better to put one big...maybe the 535d...and linearizzarlo..
It would be nice to be able to do so, however, the mass air flow sensor of the 535 has a different shape but round, and then not alloggierebbe never be in the pipe line 530

franco75

actually the axes of the limiter fumes have the limit to 9500, you should get to 13000

franco75

actually the axes of the limiter fumes have the limit to 9500, you should get to 13000

ops I was wrong discussion

sportraxxx

Good evening ,however, to complete this discussion,I had a maf of 2004, mounted,and working, but reading a low value,i.e. 1350 mg/sec I have now fitted a new bosch and measure 2020 mg/sec...
actually there is a difference between...