[Gmecm] Re: MAF specs and MAP replacement.

[Scott Pearson]

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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