[Biturbos4] Replacement turbos - buyin A6 2.7T with blown turbos

Miikka Salonen miikka.salonen at kolumbus.fi
Tue Feb 3 19:52:16 EST 2004

> MAF sizes, the OEM MAF (both Bosch and Hitachi) are about
> 73mm at the
> sensor.  They top out at 320-330 g/sec of air (which is in
> the mid to high
> 300's horspower-wise).  The RS4 MAF is 83mm at the sensor.
> However, you

You are right, I mixed RS4 MAF and S4 MAF performance. I think MTM and
APR have RS4 MAF in their +400hp sets. Do you happen to have Hitachi
MAF part number? I would like to do some price comparison.


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