[Gmecm] Re: MAF specs and MAP replacement.

[Rick McLeod]

thanks for the correction, I have tuned just about
every OBD1 GM computer and can never remember which
one rides in which vehicle!

--- Scott Pearson <mrcad472 at iowatelecom.net> wrote:
> The TGP used a 1227727, which is an underhood
> version of the 1227730. And 
> yes, MAP only.
> 
> Scott
> 
> ----- Original Message ----- 
> From: "Rick McLeod" <dunvegan at sbcglobal.net>
> To: <gmecm at diy-efi.org>
> Sent: Monday, May 23, 2005 10:42 AM
> Subject: RE: [Gmecm] Re: MAF specs and MAP
> replacement.
> 
> 
> > The 1989-1990 Turbo Grand Prix McLaren used MAP
> only
> > (I have one in the garage) to control the turbo
> boost
> > w/ a special '749 code, (if I remeber correctly
> the
> > ecm used) based if I remember correctly some Lotus
> > code? Well documented on other sites, works very
> well,
> > very tune-able, well protected from pre-ignition
> and
> > gives good control of torque and spinup through
> shift
> > rpm drop.
> >
> >
> > --- Dan Barcroft <djbarcroft at csupomona.edu> wrote:
> >> I think the turbo'd cars like regals, grand nash,
> >> cyclone/typhoon,
> >> etc... all had both MAF and MAP sensors.  I can't
> >> think of any V8's that
> >> were OBDI and had both???
> >>
> >> Dan Barcroft
> >>
> >> -----Original Message-----
> >> From: gmecm-bounces at diy-efi.org
> >> [mailto:gmecm-bounces at diy-efi.org] On
> >> Behalf Of Scott Pearson
> >> Sent: Friday, May 20, 2005 2:32 PM
> >> To: gmecm at diy-efi.org
> >> Subject: Re: [Gmecm] Re: MAF specs and MAP
> >> replacement.
> >>
> >>
> >> I think having MAP and MAF sensors in a GM system
> is
> >> an OBDII feature. I
> >>
> >> can't think of any OBDI units I've seen with
> both.
> >>
> >> Scott
> >>
> >> ----- Original Message ----- 
> >> From: "Steve Ravet" <Steve.Ravet at arm.com>
> >>
> >> So your box will have to take MAP and RPM as a
> >> minimum, and will have to
> >> have some constants related to the engine in
> there
> >> also.  What's your
> >> application?  I think most MAF systems fall back
> on
> >> MAP in the case of a
> >> defective MAF sensor, you can probably "convert"
> to
> >> MAP by simply
> >> unplugging the MAF.
> >>
> >>
> >>
> >>
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> 
> 
> 
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