Ideally you would set it up on a flow bench (shop vac, throttle body, AFM,
other AFM) in series with a good 1.9l one and set the spring to match
response as well as possible.

Yrs,
d

On Wed, Jun 21, 2017 at 11:04 AM, kenneth wilford (Van-Again) <
kenwilfy@comcast.net> wrote:

> I did this back in the day when we were getting new 2.1l AFMs for cheap.
> Seemed to work well.  The only problem was the 2.1l air box was too big to
> fit in the location of the 1.9l Air box.  So then I tried installing the
> 2.1l AFM onto the 1.9l Air box which works with some modification.  The air
> intake boot also has to be retrofitted from the 2.1l so you can see how
> quickly the cost of this mod can rise if you were dealing with new parts.
> I did it as an experiment because at the time, we were getting brand new
> 2.1l AFMs from Europe for very cheap.  As soon as I finished this
> experiment and it was successful, the company that was supplying the new
> 2.ll AFMs ran out and the cost of them went up to about the same cost of
> new 1.9l AFMs which made the entire project moot.  Now, with both AFMs
> being discontinued new and harder and harder to get as rebuilt parts, maybe
> my research wasn't in vain...
>
> Ken
>
> On Tue, Jun 20, 2017 at 11:52 PM, Neil N <musomuso@gmail.com> wrote:
>
> > Hi all.
> >
> > Found this in archives:
> >
> > http://gerry.vanagon.com/cgi-bin/wa.exe?A2=ind1007D&L=vanagon&P=R22451
> >
> > Has anyone tested to see if the 2.1 AFM will properly (provide correct
> > inputs to ECU) on a 1.9 Digijet engine?
> >
> > Thanks
> >
> > Neil.
> >
> > --
> > Neil n
> >
> > Blog: Vanagons, Westfalia, general <http://tubaneil.blogspot.ca>
> >
> > 1988 Westy Images <https://picasaweb.google.com/musomuso/New1988Westy>
> >
> > 1981 Westfalia "Jaco" Images, technical <http://tubaneil.googlepages.
> com/>
> >
> > Vanagon-Bus VAG Gas Engine Swap Group <http://tinyurl.com/khalbay>
> >
>
>
>
> --
> Thanks,
> Ken Wilford
> John 3:16
> www.vanagain.com
>