I would like to experiment with this, for i have a spare valve......How did
you adjust it?  Where is the adjustment screw?

Adam P
81  Westy "The Brick "
70 Single Cab "Whitey"
74 Beetle "Ol Yeller"
73 Transporter (STILL at paint shop)
1988 Vanagon Wolfsburg
1976 Transporter (New CA bus)
1974 412 "Goldmember"
Used Vanagon Parts for sale (mostly aircooled)
----- Original Message -----
From: "Robert Lilley" <Wolfvan88@AOL.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Tuesday, May 20, 2003 5:32 PM
Subject: Well, I decided to Utilize a little known WBX tuning secret...

> I adjusted the idle control valve.
>
> I opened the valve up four turns.  The off idle stumble disappeared and it
> revved easier with the throttle being open slowly in the first part of
rotation
> of the butterfly valve.
>
> The ICM and the ECM hand off to each other control of the engine when off
> idle and up to @1500~2000 where it is like a midrange circuit on a Carb.
>
> I did not check the O2 readings, but will later.
>
> I am running a modified cam along with other changes.
>
> If you decide to adjust this, you are at your own risk.  Just remember how
> many turns you made so if you need to put it back you can...
>
> Robert
>