Can any one help me i lost the 1 and only key to my R reg 1.4 Si almera so i bought a 2nd hand key and barrell put this on and the car will start for a couple of seconds but cuts out and as soon as you turn the ignition key to on the engine light flashes. Is there a problem with the new key barrell ? as car ran perfect before i lost the key i suspect it may be the NATS system on the car can this be disabled in any way? Any help is gratefully accepted thanks nick