Bo, as far as I know, most Race EFI systems are Open Loop. The map is set on the safe side based on AFR readings and left,
or
If you have the Data and the knowledge of your system, can be adjusted according to the conditions on Race Day if you are chasing every last bit of Power.
Check this stuff out maybe
This site has a lot of info and looks like a good place to start with the basics
http://www.enginebasics.comThese are a few Books, I have read the Bell Books, and found them really helpful in understanding the fundamentals of Turbo/EFI set ups.
Engine Management Advanced Tuning by Greg Banish. (Has been recommended on a number of Forums)
Maximum Boost by Corky Bell.
Forced Induction Performance Tuning by A. Graham Bell
Have a look around there is a lot of info out there, but I had to get the basics down first and then go from there, I am by no means an expert, I am like you learning and listening.
Pete