Тема: M42b21 bmw
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Старый 02.07.2016, 12:43   #10
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Hello Rohan
Is it bosch hfm5 maf (e46)?
Can you give me part# of it? or make photo?

You can connect ref voltage to the converter input and install jumper to jetronic mode ( external reference voltage) this will give you more precision.
But in most cases users typically uses internal 5v reference and don't connect any ref to the converter's input( jumper in motronic mode/internal reference)

Also you should know, that characteristics of e46 maf's IAT and IAT installed in original VAF could be different. And you will need to check characteristic curves of this IATs before you will connect new one to ECU and converter.

Regards
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