1 - I've just read through all 10 pages of this thread and its like Groundhog day. Evil Owl must be sick of answering the same questions.
would like to clarify something which seems to be misunderstood on here:2 - If I'm understanding the post from GUY above, once you reprogramme your keys you can swap your ECU's as you please and the immoboliser will work. If you took your car to a different dealer to get your keys re programmed, would the dealer you bought your car from know about it, or be able to tell when you take it in for a service if you put the old ECU back on?
If you purchase the reflash ecu from us with the immobiliser enabled and have the keys coded b the dealer you can swap between your original ecu and the reflash ecu.
Also the ecu was tune with our header and works well, we have not tested this with any other headers.
Guy