WAS MAF History, now why not 749

[andy quaas]

OK, i can buy the promgrammer and use it to edit all of the tables in
the bin.  No problem.  I can use a hex editor and change the cylinder
selsct.  Here's a real stupid question:  What changes with the cylinder
select?  Does it read the ignition pulses differently?  Nothing else
should really change, no?

Andy
p.s. does a 749 use the same "ESC" stuff as a more-common 7730 on the
mem-cal?



--- "David A. Cooley" <n5xmt at bellsouth.net> wrote:
> 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!
> >
> 
> 

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