AFC hack is only good until 9.25 psi/10.65 psi for OBD0/OBD1+. Sure, you can boost higher, but if you don't know why you shouldn't you don't know how to properly set up an AFC hack to boost that high.

Atlee's Z6 is running 8 psi daily, 12 psi in high setting. We're running Uberdata tuned for a GM 2 bar MAP, should be able to take advantage of the whole 14 psi before the 15G is maxed out.

My stance has always been that the D-series bottom end will take insane amounts of power... it's just that anything over 10 psi starts wearing out the bottom end very quickly. Cruise around at 7-8, pop the high boost setting when it's time for a joyride, and you'll be fine.