Hello fuhrius,
I have never posted on this site before, but I have always found it to be a guiding light when working on my 986. I'm sorry to hear about your car but at least your still here to race again! I to have a 01 Boxster S that unfortunately took on some water about 2 years ago and got the alarm control module under the drivers seat wet. Since then I have been without interior lights, door locks, window controls, and the alarm, but the car still runs like a champ and I didn't have the money to dump into a new set. So I still need to replace the immobilizer and from what I have been told, I need to have the ECU replaced at the same time because they are programmed as a set from the factory (but if anyone knows if this is incorrect please let me know). So I was wondering if you still had your immobilizer and if you were looking to sell it. The part number on mine is 996.618.262.01