GM MAP Sensors

[Carl Summers]

Kevin Vannorsdel wrote:
> 
> Has anyone ever looked at the MAP adjuster unit that Turbo City sells?  They
> also have something called a "Mixture enhancement selector" or something like
> that.  Supposedly it is also a MAP modifier.  Any comments?
> 

I have one here and have never used it so I'll try it in the next few
days and let you all know........
-Carl Summers
> ________________________________________________
>   Kevin Vannorsdel     IBM Arm Electronics Development
>     408-256-6492                Tie 276-6492     kv at us.ibm.com
> 
> owner-diy_efi at efi332.eng.ohio-state.edu on 01/14/98 02:45:34 AM
> Please respond to diy_efi at efi332.eng.ohio-state.edu @ internet
> To: diy_efi at efi332.eng.ohio-state.edu @ internet
> cc:
> Subject: Re: GM MAP Sensors
> 
> > From: Jesse R. Ortiz <jr at ij.net>
> > To: DIY_EFI <diy_efi at efi332.eng.ohio-state.edu>
> > Date: Tuesday, January 13, 1998 7:59 PM
> > Subject: GM MAP Sensors
> >
> > >Does anyone here know which wires do what on the GM Map sensors? I'm also
> > >wondering what the signal range is on the two, and three bar map sensors.
> > Is
> > >it just a voltage range, like 0-5v?
> > >
> > >Thanks...
> > >
> > >Jesse.
> > >
> > >
> 
> You're in luck.  I'm messing with a map sensor at home, leading up to an
> op amp circuit to modify the sensor signal to the ECU.  I found a power
> supply from an ancient external modem that had a 1 amp, 5 volt output to
> power my test setup.
> 
> The wires are: A) ground; B) signal back to the ECU; C) 5 volt signal to
> the sensor.  Do you have the connector?  The wire identification is on
> the plug.  If I remember right, if you hold the sensor with the
> connector pointing up and the plug side of the sensor turned toward you,
> then the wires are A, B, C from left to right.
> 
> You;ll have to wait till I get home to confirm.
> 
> Joe Boucher
> '70 RS/SS Camaro  '81 TBI Suburban