Date:         Sat, 6 Mar 2010 07:33:15 -0800
Reply-To:     Don Hanson <dhanson928@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Don Hanson <dhanson928@GMAIL.COM>
Subject:      Re: AIR FLOW METER
In-Reply-To:  <0KYU00CE971TT4X0@vms173007.mailsrvcs.net>
Content-Type: text/plain; charset=ISO-8859-1

  Until someone posted the link to that Digifant help page and then this
thread was introduced, I was not aware that the AFM was going to be
problematic, eventually.  But at the prices I see for replacements and the
description given of how the AFM works and wears, I guess when mine goes bad
I will probably be looking at a stand alone engine management system.  We
used one (Motec) on a Bosch racecar I ran for a while, and despite the fact
that I was no high tech wizard it was fairly simple to get that car running
exactly as we wanted it.
   One thing we'll have to keep in mind, when considering an aftermarket
improvment like a modern EMS,  is Smog inspectors.  If Emissions regulations
in other US states follow the California model, we'll all be required to
drive only the newest vehicle from "approved" companies.
   Exaggerating with that comment, but realistically,  the way these
so-called Emission Control inspection rules seem to be trending is more
towards "maximising Ease and Profit" for the businesses and the government
agencies doing the enforcement rather than actually reducing the amount of
air pollution each person's vehicle injects into our air..  In California
they won't even test a vehicle's emissions unless it's configured to match
their state's CARB laws.  A stand alone EMS would probably make one of their
"smog referees" pull out his parking boot and lock down your vehicle right
there, for flat-bedding off to the Crusher....at your expense, of course.
 Even though you can dial in a vehicles tune to make it incredibly efficient
and clean running with an aftermarket EMS, they will likely be
"Verbooten!!"....

  Don Hanson

On Fri, Mar 5, 2010 at 5:34 PM, pdooley <psdooley@verizon.net> wrote:

> Yep, speaking of stand alones, I've mentioned Megasquirt a few times on the
> list.
> It will be the future for DIY people.
> You can get a complete setup with wideband 02 for around $500.
> This gives you datalogging and real time display and manipulation of all
> variables.  No chips to burn for fuel or spark, just from your laptop.
>
>
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
> Max Wellhouse
> Sent: Friday, March 05, 2010 8:14 PM
> To: vanagon@GERRY.VANAGON.COM
>  Subject: Re: AIR FLOW METER
>
> Even with a discounted AFM new, and other expensive parts for the
> aging waterboxer motor,  the Haltech( or other engine management
> systm) sounds more feasable all the time.  Ebay has lots of them for
> sale,new and used,  and if you can still do DOS on your computer, an
> old F-9 or E6S unit will do just fine.  The windows-based systems are
> a little more money, but have cool 3D graphics if that sort of thing
> turns you on.
>
> My Haltech(an older E6S) runs on a MAP sensor/Throttle Position
> Sensor with air temp and coolant temp input.  It also allows you to
> design your own spark advance curve.
>
>  DM&FS
>
> At 10:43 AM 3/5/2010, Loren Busch wrote:
> >On Fri, Mar 5, 2010 at 8:17 AM, pdooley <psdooley@verizon.net> wrote:
> >
> > > Somebody should come up with a MAF interpolator for this vehicle.
> > >
> >
> >I assume you are talking about what some have called a 'hot wire' setup
> >rather than the moving vane.  At least two people or groups have
> >experimented with that idea that I'm aware of.  And ran into some problems
> >that are or would be difficult to get around, nonlinearities in making
> such
> >work with the existing Vanagon engine control system. Both of the attempts
> >that I'm aware of seem to have come to a halt, heard nothing for several
> >years now.
>