WAS MAF History, now why not 749

[David A. Cooley]

You could probably use the fuel tables pretty close to where they are now
and run a 2 bar MAP sensor...
Then the chip will never see boost and only run in the "N/A" fuel portion.


-----Original Message-----
From: ECMnut at aol.com <ECMnut at aol.com>
To: gmecm at esl.eng.ohio-state.edu <gmecm at esl.eng.ohio-state.edu>
Date: Wednesday, March 31, 1999 10:09 AM
Subject: WAS MAF History, now why not 749


>Hi Andy,
>When Richard Tomlinson wrote PromGrammer, his focus
>(and test vehicle) was a 6 cyl Syclone turbo.  If you use a
>hex editor to change the byte, it will then display as 8 cyl
>in the program.    True, you cannot edit that byte from within
>PromGrammer.  Using a hex editor, change the "C0" at location
>0x00009 to "00" for eight cylinder.
>As for 1 bar vs 2 bar,  I forget the actual value.  Refer to the 749 Docs
>for that.  Per promgrammer, the location and name info are:
>~~~~~~ snip ~~~~~~
>     0x0334      KAFOPT3_5       2 ATM MAP Option
>~~~~~ end snip ~~~~
>The Syclone & Sunbird Turbo chips will have the same value there.
>If you are afraid to be a "pioneer" on this, someone else will prolly
>do something similar in the near future.  You can bet the fuel related
>tables will need significant work after changing the MAP option byte
>from 2 to 1 BAR.
>HTH-  MV
>
>>  I'm just scared to try something that nobody has talked about (use a 749
>>  on a v-8 w/o a turbo).
>>
>>  Supposedly there is a cylinder select function, as is shown in the
>>  promgrammer.  But it won't let me change it to and 8!
>