ive heard that it works on the pre 2006 models. i put a jardine silencer and a racing ecu on mine and i lost a lot of the midrange torgue but once it gets past 4000 rpm it goes like hot shit off a shovel
have a look on UKBEG the whole tech bit is explained there .:60277EB7B04744289C0
bassicaly it gets rid of an emision flat spot to get through the emision tests.
you only need to remove the pin from the conector then tape it up , DON'T cut the wire.
the ECM spy can over come this too.