Will the PCM will turn off spark & inj. if TIMING its off this much degrees?
Probably but not because of the amount but because the logic/parameters are not being met. But who knows? But with respect who cares? If it looks like a duck, quacks like a duck it's probably a duck. And to confirm it you are going to either going to have to get your WPS out to confirm or just pull it down. Which I'd imagine you have already done.