@520i E60
You 520i does have a MAF sensor. It's part number 13627520519, originally manufactured by Bosch, shown with the number 3 in the image below.
View attachment 409424
Source: RealOEM.com - Online BMW Parts Catalog
Yeap.Thank you, The MAF sensor measures the intake air intake, but within the manifold there should be no other sensor.
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