Thank you all for replying I had a feeling it was somthing to do with cat as that is only original part of exaust system as rest of it is stainless and relatively new. Also to thin metal to be engin bracket. Thank you pitbull and natehall for vid you posted what fell off is identical I was worried at first coz the noise it made bouncing of the road and the underside of car thought Silverstone was out the window. I may go with 1-pd on heat wrap