Hi, i was suffering from the same problems as you until this afternoon. I was running out of ideas, i had done the paper clip test (no codes logged) etc,etc. Then this afternoon the side of the back box in the exhaust blew out with the loudest bang you've ever heard, I wouldn't have believed it possible for this to happen, but it has, and now the car goes like a rocket with none of the power loss or hesitancy that i was experiencing before....sounds a bit to sporty for me now though,,,lol

Dave
2000 2.5 elite