I think the main issue with that part is that it's just pretty cheap plastic with no support in the middle. My car had the slight sag with delivery miles so I don't think that was turbo related. Also, since I fixed it over a year ago, it has not started to sag again (and I'm in hot Florida). Some folks have taken that part off completely - I have no idea if this is a good idea or not, as I'm not sure if that piece blocks water infiltration or if it's merely cosmetic.