It doesnt loose power, seems the same as before.
Noise comes from the top end I think. Though Im not too sure exactly. As I was/am too tired to check properly.
I can hear it when idling, so hopefully its not knocking and that its just the lifters, which hopefully will be ok when car has cooled down i think.
Thanks wilchy and others... will go check it out in a bit when the car has cooled down.