I'll second what Benny's doing as for the past 10 years I have been running
the 1.9 cooling system and the Digijet FI with no problems out of the
ordinary to report.  I recently upgraded to the European 2.1 Digijet ECU
(thanks to Boston Bob!) and roadtested it with a trip to Buses By The
Bridge/Lake Havasu from Ventura with a marked improvement in power and
throttle response, especially in relation to hill climbing.  This is with a
fully loaded Westy with a loaded trailer tagging behind.  As as I can tell,
there's negligible effect to mileage (if any).  It's nice to only have the
accelerator pedal a third to almost half-way depressed, verses two thirds
depressed for most driving.

I agree with Benny that the 1.9 cooling system is much easier to maintain,
bleed and the omission of the oil cooler is fine.  When I did my upgrade 10
years ago, I just could not justify the cost(s) to upgrade to the
2.1cooling system, exhaust and Digifant.  In retrospect, I'm very glad
I
didn't.  1.9 stuff is less expensive to replace/maintain, although some
pieces are just now becoming hard-to-find (HTF), so drawing on my experience
in owning vintage vws, I have a rather substantial spare parts stash I'm
adding to all the time.  Because Westfalias are climbing in the demand and
price brackets, I plan to never, ever sell mine, because I could never
afford to replace it with an a equivalent!
-- 
Jim Thompson
84 GL 1.9 "Gloria"
84 Westfalia 2.1 "Ole Putt"
73 K Ghia Coupe "Denise"
72 411 Station Wagon "Pug"
oldvolkshome@gmail.com
http://www.oldvolkshome.com
***********************************
On 1/22/07, Ben <huotb@videotron.ca> wrote:
>
> Hi Ken
> To use the Europe/BB ECU, because i have tons of spare/new Digijet
> parts, not that much for Digifan.
> Because i like Digijet, i have way less problem then the Digifan, well
> at least for me!
> Because parts are expensive on Digifan (up here, at least 30% more),
> because the 2.1L exhaust system is almost twice the price, well up here
> at least.
> Because i like the 1.9L cooling system. �asy to bleed, easy to fix, less
> expensive.
> Because i have bleed over 50 vans last summer, all 1.9L were so easy, i
> had problems bleeding  some 2.1L
> Because i'm too lasy to change the wiring :-)
>
> Why did i use a 2.1L engine... well, i have 9 sitting in the shop. Will
> it explode because i have no oil cooler! maybe....  like i told Denis, i
> did testing on many engines as to how hot they run core/oil wise, i did
> so much testing (mostly on Air-cooled) on Bus and Vanagon.... my goal
> was tu run a Air-Cool engine at 200-220F at 65mph and a head temp of
> 340F at the same speed, i have achived that, i tested 1.9L and 2.1L and
> the 1.9L runs just slightly higher without an oil cooler (about 10F),
> not much!
>
> Cheers, Ben
>
> Kenneth Lewis wrote:
>
> > Ben,
> > Why did you decide to use the 1.9L FI system? Ken Lewis
> > http://neksiwel.20m.com/