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Re: Abnormal high MAF reading - Cause?
Posted to Technical Discussion Forum on 3/9/2020 1 Reply

It is a interesting point.

I have now a identical engine at shop (1996 BMW 740i)

Measuring intake vacuum at idle, engine hot, 700 rpm for both cars:

Known good 740i: 16 inch hg

540 i with high MAF sensor reading at idle: 12,5 inch hg !!! Steady low vac... Login to read more.

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