My Z was running well after my friend and I rebuild the motor. Needed to be tune but was running fine. My friend took it to Z1 Motorsport to have them check why the upgraded injectors was not working correctly. We both are in the Army and got deploy to Iraq. Needless to say Z1 did somethinh to my Z and it never ran the way it did. So now I'm trying to fix the problem. So the PTU that have 6 pins connectors, is that the one that send signal to individual injectors? If it does that than maybe I should get a new one. Also I think Z1 fry my EFI harness cause my ECU circuit was fry which cause the car not to shut off. Now my ECU is working fine thanks to AZSPEC. The new PTU was hook to my old EFI harness.