Date: Mon, 1 Oct 2007 15:50:11 -0400
Reply-To: Jim Akiba <syncrolist@BOSTIG.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Jim Akiba <syncrolist@BOSTIG.COM>
Subject: Re: MAF sensor and a waterboxer
In-Reply-To: <12921.204.239.110.250.1191267502.squirrel@hasenwerk.homeip.net>
Content-Type: text/plain; charset=ISO-8859-1
They will be the same style of chosen output methods David. Ford uses MAF
0-5 volt outputs, calibrated differently in different applications, GM
usually uses frequency output calibrated across different models for their
karman meters.. it won't matter how it's calibrated as the signaling is
wholly incompatible to begin with. It's like worrying about snow tires for a
boat, it's pointless to worry about tread patterns since boats(most boats
anyhow) don't need/have snow tires to begin with.
Jim Akiba
On 10/1/07, David Marshall <mailinglist@fastforward.ca> wrote:
>
> Isn't saying a GM MAF (BTW... there's no apostrophe for more than one
> MAF!) sort of like saying a VW MAF considering a Golf I4 and VR6 MAF are
> different things so why would one assume that all GMs use the same
> MAF? Perhaps it would be better to get the model and year of the
> vehicle that has the correct MAF?
>
> Just a though...
>
> David Marshall
>
> http://www.hasenwerk.ca
> http://www.fastforward.ca
>
> Box 4153, Quesnel BC, Canada V2J
> 3J2
>
> On Mon, October 1, 2007 10:07, Jim Akiba wrote:
> > I
> remember GM MAF's are karman units, and produce a frequency based
> > "count"
> > for the ECU, this would definitely not
> work properly without conversion...
> > hence the black smoke at
> startup(bad too rich) and extremely high MPG(bad,
> > too lean) The
> fact that he can drive it like that at all is surprising.
> >
> > Put a wide band O2 on the setup and watch it during a drive cycle.
> It's
> > likely a nightmare.
> >
> > Jim Akiba
> >
> > On 10/1/07, Tabe Johnson
> <greentabe-vanagon@yahoo.com> wrote:
> >>
> >>
> Man, that's worth a look, even if you don't buy the van! Uh, would
> >> you mind bringing a camera and taking a bunch of photos of what
> he did
> >> while you're there?
> >>
> >>
> >> tabe johnson/87 westy
> >> (Interested in the MAF
> setup, but not believing the 26 MPG... Maybe he
> >> has one of
> those
> >> electric turbocharger setups...)
> >>
> >>
> >>
> >>
> >> Date: Sun, 30 Sep
> 2007 19:43:17 -0700
> >>
> From: Clint Kolda
> <clint_kolda@YAHOO.COM>
> >> Subject: MAF sensor and a
> waterboxer
> >>
> >> I just called a guy about a 1985
> vanagon that he has for sale. He said
> >> he
> >>
> removed the AFM and
> >> wired in a GM mass airflow sensor. He
> said he now gets 26-27MPG. He
> >> indicated there is a
> little
> >> black smoke at startup, otherwise runs OK. Has
> anyone heard of this
> >> mod? What's a good price
> >>
> for a
> >> used AFM these days? Maybe the van will need one.
> >>
> >> Clint
> >>
> >
>
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