i changed the ecu and imobilizer on bravo hgt (1996) and got only the master key with the new ecu. now when starting the car with the master key , every third time the CODE lamp stays on. The car starts normally no matter. But i heard that you shouldn't start the car with the red key, only with the blue ones. Is that true ? I have 2 blue keys from my old ecu, so can i somehow program them to start the car ?