New - help on GM MAF

[steve ravet]

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