re
"If you're going with the AFM, a
2.1l filter box and rubber gooseneck would make sense to me."

the 2.1 air r box will not fit onto a vanagon 1.9 waterboxer engine, if
that's what you are thinking of trying,
as the two main coolant hoses for the 1.9 interfere with the larger round
2.1 air box. Like 3 inches worth of inteference there.
would have to completely re-route the 1.9 main coolant hoses,
which appears to not be that practical or easy.

----- Original Message -----
From: "David Beierl" <dbeierl@ATTGLOBAL.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Tuesday, August 11, 2009 11:48 AM
Subject: 2.1l vs 1.9l AFM was Re: Looking for a good used Air flow meter 1.9

> At 08:33 AM 8/11/2009, Mark Dearing wrote:
>>That  should be digijet.
>>I'm not sure if those meters are the same as the 2.1  digifants.
>>
>>If they do interchange, then I have 5 or 6 of them in the  garage.
>
> The opening into the intake gooseneck is larger on the 2.1l AFMs.  I
> think the mount to the filter box might be different
> (adaptable).  Electrically they're undoubtedly similar, maybe
> identical; but mechanically they're built to accommodate the larger
> airflow through the 2.1l engine so would at least need recalibration
> to be correct for the 1.9l.  I *suspect* that a properly working O2
> sensor would be able to compensate for the differences though of
> course that's not an ideal route.  If you're going with the AFM, a
> 2.1l filter box and rubber gooseneck would make sense to me.
>
> Mark Drillock?  Do you know about these swaps?
>
>  --
> David Beierl - Providence RI USA -- http://pws.prserv.net/synergy/Vanagon/
> '89 Po' White Star "Scamp"