Thread: Datalogging
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      12-06-2012, 05:46 PM   #6
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Drives: Z4M/. Z3M, E36/46 M3
Join Date: Oct 2008
Location: Teaching the dog to slalom

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Originally Posted by exdos View Post
I was 99.9% sure that there's no MAP sensor on the Z4M. So what exactly is the datalogger reading from the Z4MC's ECU as "Airflow from MAP"? Other BMWs with S54 engines don't yield as much information from their ECUs and there's is no "Airflow from MAP" available on them.

As my graph shows, the plot from the MAP is similar to that from the MAF, but smoother (as if regulated) so it appears as if it must, in some way, be related to the airflow, but exactly what I'd like to find out?
You'd have to ask the scanner development/support team what channel they are reading. Know of no other way to answer this, sorry.