Re: Urgent Help Required - Ref ECU
Thats funny, cos the Bosch part no from the one i took out of my car (S reg) and the replacement (also of an S reg) was 0 261 204 705. I would ask them to take a photo of the connectors to see if they look the same (still no guarantee it will work, but guessing probably will).
Also I believe in order to use that ecu, you will need the code box from behind the fuse box (ive been told they are red/yellow but) the two i've seen were black with a green sticker, follow the aerial wire round the ign back till you get to a box, and you will also need the transponder chip(s) from that cars keys.
I may be totally wrong, but from what I've figured out/been told by the helpful people here, mismated immobiliser box / chips / ecu will just lead to a car that wont work cos you will just see the code light coming up, cos they all 'speak' to each other and need to match all the codes.