if ya chip was unreliable then maybe use this as a excuse to upgrade

toe knee, the idea you said wont work as the problem is the fueling under RPM, as in a t3 is on boost ealier and runs out of air earlier so the fueling map would make it rich at lower RPM and lean at high RPM

as for running a chip thats ment for 22psi at 10psi thats also bad too