Modified Fuel Injection

[James Weiler]

Oops, we've got our MAF's and MAP's confused.  We know that the ford MAF 
puts out voltage with air flow and the ford MAP puts out fequency vs. 
presure.  What I was asking was how does this compare to GM units?  I 
thought the GM MAF put out freq. and the GM MAP put out a voltage 
(oposite to the ford system).  You originally said something about GM 
MAF's and their voltage vs air flow curve.  I thought this should be 
frequency.
no biggie
jw


On Wed, 22 Apr 1998 jdzura at csc.com wrote:

> I'm interested, but I don't understand what you mean by "Variable Frequency". I
> thought the EEC IV put out voltage not frequency. What does a varying voltage
> caused by changing air flow have to do with frequency?  When you say you have t he
> tables, do you mean the map of airflow vs output voltage for a specific MAF?
> 
> 
> 
> 
> kb4mxo at mwt.net on 04/22/98 04:16:49 AM
> 
> Please respond to diy_efi at efi332.eng.ohio-state.edu
> 
> To:   diy_efi at efi332.eng.ohio-state.edu
> cc:    (bcc: Joe Dzura/SED/CSC)
> Subject:  Re: Modified Fuel Injection
> 
> 
> 
> 
> Ford EECIV map will put out a variable frequency. Have tables if you
> need them
> Steve
> James Weiler wrote:
> > Hmm GM and ford too?  I knew fords were like that but I thought that
> > the
> > GM units put out a variable frequency vs. mass air flow.  Am I getting
> >
> > confused with the ford MAP sensor ?
> > any help mucho appreciado
> > later
> > jw
> >
> > On Tue, 21 Apr 1998, A70Duster wrote:
> >
> > > You may read that the AMS (from GM units ) put out a voltage that is
> > directly
> > > proportional to the Air Mass.  That is NOT true.  It is a parabolic
> > function.
> > > Friendly advice.  Good luck.
> > >
> > > See ya,
> > >
> > > Mike
> > >
> 
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