miro, what you're saying is true when dealing w/ non factory turbo'd cars and/or cars w/ much larger inj and using large correction factors through the afc.

factory turbo'd and moderate correction numbers don't have the same catastrophic results as a honda running 450cc inj w/ an afc. that can also be done successfully if base timing is retarded and a msd btm is used, but then the same or more $$ has been spent and still not as tuneable as a socketed/chipped/tuneable ecu.

but none of this really applies since we're talking about a supra anyway.