This modules don't work on the Crossfire. But this Britain Company says, that the can manupulate the Skreem and ECU so that you don't need a matching transponder and you can use any Key. I wanted to send one of my trial sets to those I've already read out and after modifying it read everything again to understand how they did it. But they want 442.80 gbp > 550 USD for their service, this is too much for me just for a test.