Originally Posted by powers1

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You are well informed.You need to get it coded ,otherwise the ecu will not even know its there!
We usually always get the Bmw dealer where we buy our parts to code items we buy there....
Make sure you do get an oem MAF ,if this is the case,and then just mention it at parts if they can arrange for the car to be coded!
Alternatively,just buy the MAF and then book the car in for diagnostics!Should be about 30 minutes...