Date: Tue, 10 Feb 2004 23:14:16 -0800
Reply-To: Damon Campbell <damoncampbellvw@YAHOO.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Damon Campbell <damoncampbellvw@YAHOO.COM>
Subject: Re: Analog TPS fitted to a WBX throttle body?
In-Reply-To: <BAY12-F102ziOlnVyTE00022629@hotmail.com>
Content-Type: text/plain; charset=us-ascii
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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