New - help on GM MAF

Knowlden and/or Eller ke at clark.net
Tue Jun 15 17:50:24 GMT 1999


Terry, tell me a little bit about your product. Maybe you can compare it to
Promedit.

Bob Knowlden

-----Original Message-----
From: owner-gmecm at esl.eng.ohio-state.edu
[mailto:owner-gmecm at esl.eng.ohio-state.edu]On Behalf Of TK
Sent: Tuesday, June 15, 1999 1:17 AM
To: gmecm at efi332.eng.ohio-state.edu
Subject: Re: New - help on GM MAF


I'll vouch for Mark!

Terry Kelley

-----Original Message-----
From: Mark Romans <romans at pacbell.net>
To: gmecm at efi332.eng.ohio-state.edu <gmecm at efi332.eng.ohio-state.edu>
Date: Monday, June 14, 1999 10:04 PM
Subject: Re: New - help on GM MAF


>Well having the listing is a start, but if you want to use an editor that
>puts it all together for you, contact Terry Kelley, he has written an
editor
>that he has put a ton of time into that puts it all in easy to use format.
>I don't know what he gets for it, but I can vouch that it works, I've seen
>him use it.
>
>Mark
>-----Original Message-----
>From: steve ravet <Steve.Ravet at arm.com>
>To: gmecm at efi332.eng.ohio-state.edu <gmecm at efi332.eng.ohio-state.edu>
>Date: Monday, June 14, 1999 3:42 PM
>Subject: Re: New - help on GM MAF
>
>
>>Bob, "ECMGUY" has a completely disassembled 165 listing on his home
>>page.  The tables are all laid out, and the code is all there to figure
>>out how it works.  See
>>
>>http://www.geocities.com/MotorCity/Shop/9938/hacks.html
>>
>>--steve
>>
>>Knowlden and/or Eller wrote:
>>>
>>> Hi everyone. I subscribed the DIY-EFI a couple of weeks ago. Yep, I have
>>> been sittin' in the shadows watchin'just to get a sense of the
community.
>>> Have gotten a little bit of "sense" so I have spent some time searching
>the
>>> archives. What I have been looking for is information on the GM MAF
>systems.
>>> My searches (on things like "lv8", "filtered load variable", "MAF") have
>>> produced some good information but of course I want more. I am building
>an
>>> '89 Corvette targeted to be supercharged. I have rebuilt the engine and
>it
>>> currently is basically stock, being the careful methodical person that I
>am,
>>> I want to keep the number of unknowns to a minimum. Now I need to
>>> understand, and be able to modify, the "control system". I have diacom
>and
>>> promedit. I have found the base spark tables and have successfully
>"burned"
>>> my own chips. I have uploaded to DIY-EFI ftp my memcal, APYP, ecm p/n
>>> 1227165, along with a description text file that includes the ".ecu"
>>> parameters for what I know. What I don't understand is what the fuel
>tables
>>> would look like, or if there even is a "fuel table". It seems to me that
>>> with MAF I would need some kind of table of conditions  (i.e.WOT) and
>>> desired a/f ratio but I don't know. Can anybody help me here? Can you
>>> suggest reading material to help me understand how the gm MAF systems
>work
>>> in theory and/or practice? Does anyone have a MAF memcal binary with
>known
>>> offsets so I can see what the tables look like, or at a minimum a memcal
>for
>>> a 305 MAF tpi with my ecm p/n? Not asking for much am I.
>>>
>>> WOW is this long. Sorry.
>>>
>>> Thanks for any help provided.
>>>
>>> Regards,
>>>
>>> Bob Knowlden
>>
>>--
>>Steve Ravet
>>steve.ravet at arm.com
>>Advanced Risc Machines, Inc.
>>www.arm.com
>>
>
>




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