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Old 04-22-2009, 09:33 PM   #5 (permalink)
tasdrouille
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So you got a MAF from a VR6, it probably is operating properly, but not at the exact voltage the TDI ECU is expecting for a given airflow.

It might be something like the 2.0 MAF, but reporting lower voltages instead. See http://www.geocities.com/tech4tdi/pages/maf2l.html

The weird thing is that if you're reading low, fueling should be cut back. But then you got a tune so who knows what the new maps look like but the tuner.
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