The stock ECU for the N/A 3.2 is a MAF based system. It only sees airflow, not MAP. The "K" engines all used a speed density (MAP) ECU setup. What you are currently seeing is a combination of the overhead that the MAF has (which isn't enough for the boost you are running) and the SRT6 injectors (I believe) you are running. I am 100% sure the car runs, but I am also 100% sure that a piggy back will not solve your problems. The MAF itself is rapidly going to become the choke point for your setup. A 74mm MAF from a V8 car might help a little, but you will always be out flowing it, not to mention that the MAF is not meant to deal with the turbulence that a supercharger will induce, giving inconsistent readings. There is a reason that people need to swap to the ME2.8.1 ECU, and it's not because they like spending money.