Date: Wed, 11 Feb 2004 07:48:17 +0000
Reply-To: Chris DeLong <green536@HOTMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Chris DeLong <green536@HOTMAIL.COM>
Subject: Re: Analog TPS fitted to a WBX throttle body?
Content-Type: text/plain; format=flowed
Well the early 1.9l TB has two separate switches that are attached to the
housing of the TB and the 2.1l tb has the single switch on the bottom of the
tb. You might also consider a tps from an OBD1 A3 Golf or Jetta.
Technically, you could even use that tb. You will jsut need to make a plate
and weld it to the intake plenum for the WBX. That would be a sweet program
there.
I know that the basic MS system doesnt have ignition. Thats why I asked. I
actually have one sitting is a drawer in my toolbox. It is destined for my
rabbit :D 2.0l 20v with a little boost :D.
You might also be able to use an auto tb as I think the shaft is longer.
This would make it easier to fab in the tps.
Chris DeLong
Fine Tuning
206.367.5503
www.finetuningperformance.com
Seattle, WA USA
>From: Damon Campbell <damoncampbellvw@YAHOO.COM>
>Reply-To: Damon Campbell <damoncampbellvw@YAHOO.COM>
>To: vanagon@GERRY.VANAGON.COM
>Subject: Re: Analog TPS fitted to a WBX throttle body?
>Date: Tue, 10 Feb 2004 23:14:16 -0800
>
>Thanks for the reply, Chris.
>
>It doesn't make a difference that i am using a 2.1
>throttle body, does it? I didn't spend any time
>looking at the two shafts when i had the 1.9 and 2.1
>tbs sitting right next to each other...
>
>As far as remapping the advance curve? No. For now,
>i am just using the stock vacuum advance (mostly out
>of simplicity). In it's primary configuration,
>megasquirt is fuel only. However, once i get that
>dialed in, i can reconfigure MS to handle spark as
>well. That is significantly further down the road,
>though. Also, i have not checked into the different
>curves for a 1.9 vs. 2.3L. I've tried to look into
>this in the recent past, but couldn't really find
>anything conclusive. I'd imagine my vacuum vs. load
>vs. rpm map is quite a bit different than stock, but i
>don't know how to go about figuring that out. What i
>have now works, and doesn't knock or ping, so i am at
>least conservatively good in that respect.
>
>To answer your last question, i am going with
>megasquirt because my stock digijet FI system is
>having a hard time fitting with a significant
>displacement increase (although it does work...
>marginally). MS is also only a couple hundred bucks,
>almost infinitely configurable (see above) and almost
>infinitely tunable. The option of data logs and other
>support software should make my engine management
>system that much more advanced. Also, the MS list is
>just as helpful as the vanagon list (which is to say,
>very...).
>
>I also like learning, and this is one more toy...
>
>-Damon
>
>--- Chris DeLong <green536@hotmail.com> wrote:
> >
> > Well if you need to stick with VW parts you can use
> > one from a Passat 16v
> > auto. It has the standard "D" shaft. Dunno how you
> > are gonna make it work
> > with the short shaft on the WBX TB.
> >
> > I take it that you are going to run the standard '84
> > vacuum advance ignition
> > system? Have you checked the advance curves for a
> > 2.3l vs. a 1.9l? The
> > volumetric efiiciency will be drastically changed
> > from the displacement
> > variation. Are you giong to recurve the distributor?
> >
> > Why exactly are you going with Megasquirt?
> >
> >
> > Chris DeLong
> > Fine Tuning
> > 206.367.5503
> > www.finetuningperformance.com
> > Seattle, WA USA
>
>=====
>'84 Westy (Sparky) w/2.3L WBX (wow... it actually works!)
>
>__________________________________
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