Is everything earth properly?Check the connections and make sure you haven't plugged anything into some where else by accident.Are you 100% sure the key you got matches the ECU and receiver?Its 3 wires from the receiver 2 go to ECU and one goes to the OBD2 connector in passenger kick panel.Also check the fuel cut off switch.Does the fuel pump prime?Are you getting voltage to the pump?Check the fuses in the external fuse box and check the Puma wiring for dodgy connections or breaks in the wiring.Try taping the key or chip to the ecu and see if it works that way as well.Also try disconnecting the battery and see if it resets its self.