[Gmecm] Re: MAF specs and MAP replacement.

[Rick McLeod]

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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