Date:         Sun, 23 Sep 2007 14:59:17 -0400
Reply-To:     pdooley <psdooley@VERIZON.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         pdooley <psdooley@VERIZON.NET>
Subject:      Re: ECU firmware location
Comments: To: tinker man <tinkerman007@gmail.com>
In-Reply-To:  <1b0df96d0709230158h75e4c69fgf76f94892c777dbd@mail.gmail.com>
Content-type: text/plain; charset=US-ASCII

MS doesn't even use a MAF. (It can though if you so desire).
The system's algorithm is based on speed density.
That basically means it uses a map sensor.
A $40 Motorola sensor that is included with the ECU.
Just hook a small rubber hose to a clean vacuum signal and you are all set.

That was one the coolest parts about converting my Rabbit pickup to MS.
No more bulky CIS crap littering the engine bay and no air flow sensor
limiting the intake air flow.

Anyway, regarding your question, maybe I am confused.
You are talking about translating a hot wire signal?
Is the Vanagon setup MAF/hot wire?

I thought it was a mechanical AFM with a wiper and resistor..

-----Original Message-----
From: tinker man [mailto:tinkerman007@gmail.com]
Sent: Sunday, September 23, 2007 4:58 AM
To: pdooley
Cc: Vanagon mailing list
Subject: Re: ECU firmware location

On 9/17/07, pdooley <psdooley@verizon.net> wrote:
> The great thing about MS is you are not limited to old archaic components.
<snip>
> Never pay for another chip burn and rid yourself of VW AFM's, ECU's and
> ISCU's.

The one I'd most want to get rid of is the AFM, who's mechanical
deterioration is the hardest to fix. I wonder if after all the talk
here on the list someone has actually come up with an alternative.
Actually, it should be the easiest because it's just translating a hot
wire sensor signals to the ones the ECU expects, which can be easily
measured on a working unit, as opposed to reverse engineering the ECU
or ISCU, and emulating the complex signals they produce (and also the
packaging, connectors and power drivers)..
You know what? I'll post it to the list on a separate and see what I
come up with...

Cheers,
TM