^
easy to do, unhook the negative battery terminal, jack your car up at the front and you will see it on your headers, bout 20cm away from where the CAT is. then just get a spanner (prbz 24mm one. just a guess)
unhook the old one, you will see its clipped on. then clip the new one and ur laughing.

reconnect your negative terminal and let the car idle so the ecu adjusts. then your set