Re: 89 MAF Volt to freq conversion

[Mark Romans <romans@pacbell.net>]

I have  a copy of the 86 hac, what is the address of the switch?  I will
look in the 89 code to see if I can find the same thing.  I think the
problem is that the code will still only read up to 255 grams/sec even if
the maf would read more.  To convert it to load the whole fuel and spark
maps would have to be re-calibrated.
Mark
-----Original Message-----
From: DC Smith <morepoweral@tetranet.net>
To: gmecm@efi332.eng.ohio-state.edu <gmecm@efi332.eng.ohio-state.edu>
Date: Wednesday, January 05, 2000 7:44 AM
Subject: Re: 89 MAF Volt to freq conversion


>Hey, Tom! It's been over 2 days and no reply on this one? Gee, if it
>were only true for the 7148 Buick GN code. It sure would puit a cramp in
>the MAF translator sales, since the GN MAF went disc.. :) MAN! I need to
>read more of those web pages! <grin>
>
> Anybody know anything about this? Pulleeze? ;)
>
> BTW, happy new year friends!
>
>Thomas Matthews wrote:
>>
>> In the ECMguy's hack of the 86 '165 bin, he has a flag for MAF type,
voltage
>> or frequency... Does anyone know if this is present in the 89 ARAP ($6E)
>> calibration, and if it is there, where it is?
>> Is it as simple as flipping the volt to frequency flag, and recalibrating
>> the calibration to use a newer, higher flowing GM MAF, such as a LT1
sensor?
>> He also has 6 tables that define the range of a frequency MAF, but in the
>> showing of the tables he has voltages- would these be the ones to adjust?
>> Is some other part of the program performing a conversion from voltage to
>> frequency that I have missed?
>> Also, I've seen numerous references to VATS- I thought it did not come
along
>> until '88.
>> I remember that some were heading this way a few months ago, but haven't
>> seen anything recently...
>> Thanks
>> Tom
>
>--
>***********************************************************************
>Dan Smith      84 Regal   11.841@115.09     GSCA# 1459
>St.Charles, Missouri
>mailto:morepoweral@tetranet.net
>http://www.tetranet.net/users/morepoweral
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>