Hello everybody I have just completed my swap. It was a 2000 LS into my 1999 Civic. The swap is complete except for one little tiny problem......the immobilizer. Right now I am stilll running my 1999 civic ECU because of the little tiny problem. If anybody could help me out in any way I would really appeciate it. I must say though, I can tell my car is faster but I think if I ran the LS ECU it would be even more faster because of fuel mapping etc.