Man, that's great to hear. I've been dealing with an identical issue on a Whippled 302, GT500 pump, 60lb injectors @ about 12psi. I'm still running the stock MAF, so maybe I should invest in a new one.
I took a step backwards. I had access to a very good maf curve for the whipple tube and stock maf with a mafia. Sure enough I threw that on and the a/f is dead nuts on point. I know the mafia tends to crap out and it's a bandaid more than anything but at this point I'm fine with it. I'll just have an extra mafia in the trunk just in case.