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Using a Pierburg MAF

Using a Bosch MAF

Using a Pierburg Mass Air Flow sensor with an ECU programmed for a Bosch MAF

The schematic is shown here. It basically is an attenuator that also does some level shifting and curve shaping. In the interesting air flow range from idle to full power (50kg/hour to 400kg/hour) the conversion is very accurate. This circuit has been tested for quite some time in a 81kW TDI. It work beautifully. No error codes in the ECU (of course not, the ECU doesn't even see the difference between a Bosch and a Pierburg MAF. So why should it complain when it does get the right signals.)

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