generally any immobiliser works by cutting the power to ignition coil / injector pumps or other vital parts of the electrical system. as long as the immobiliser was fitted after manufacture then they are quite simple to remove. follow the wire from the fob receiving socket to the immobiliser control box, you should find this will have (as well as power) 4 wires comming out, these are 2 groups of isolating wires. trace these and you will probably find they splice into another 2 wires, cut the splice out and rejoin the origional wires and copnsider your immobiliser bypassed.
Alex
June 2007