remember you were on about remapping it
have you thought about getting another ECU and having it programed for the keys then remapping that one
bit more hassle but when you come to give it back / put it in for a service you could swap them back vw will know nothing about the remap
only thing is youd prob need to find someone who could program the ecu for the imobiliser. i think vagcom software can do it but it needs to be registared to change most of the settings but its good software to have as it will show up any problems when the engine light comes on
Ross-Tech: VAG-COM
and you need a OBD2 cable to connect to the diagnostic port. i got mine on ebay for £10 inc delivary