Christ I'm getting annoyed. I went to Kwikfit to get a new cat back system fitted on my 740 2.0 litre estate automatic and they fitted the rear silencer upside down. Had the car taken back twice and the bloody rear silencer is still upside down. !!!!!!! Going to go to a different Kwikfit personally tomorrow (if they are open) and get it sorted. Imagine the water collection in the rear silencer when the exit pipe is positioned at the top of the rear instead of the bottom of the rear !!!