EFI code

[DAVE MORRILL HPL DESIGN ENG 207-775-8574]

Hello,
	I am an electrical/computer engineer and am just getting started on my
own EFI project- a turbo aircooled VW motor w/ EFI, I plan to adapt a pre 1990 
GM system but have not decided for sure yet.  Just in the beginning planning 
stages for this winter project.

Jeff (below),
	Do you have this code available on line?  I would like to take a look
at any available engine managment code and get any tips/advice on the GM
systems from anyone out there (is GM the easiest to modify/adapt??), or any
suggestions on this project in general.   

Thanks,
	Dave Morrill
	National Semiconductor Design Engineer
	dmorrill%spf.dnet at gpo.nsc.com

	


From:	GPO::"owner-diy_efi-outgoing at coulomb.eng.ohio-state.edu" 24-JUL-1995 17:15:15.47
To:	diy_efi at coulomb.eng.ohio-state.edu
CC:	
Subj:	pulse width correction

In perusing some sample EFI code, I noticed that a linear function was used to
adjust injector pulse width for changes in battery voltage.  The adjustments
appeared to range from 600 microseconds to 2000 microseconds as voltage went
from 16V to 6V. 
Is it standard practice to use a linear function for this correction or is it
dependent only on the particular injector?  Does anyone know of a source of
information regarding ITO times and varying voltage can be found?

Any help would be appreciated.

Thanks,

Jeff