Hi,I was just drive to my work place and when I parked my car I realised smoke coming form engine bay.So opened The bonet with engine running and Cam properly smell fumes/like burning oil .Also strange sound coming from engine compartment but not like is engine itself but more like something try to open or is blocked (sorry hard to explain)
Any idea?

I'm needing advice, I am thinking of straight piping my car from the turbo back but im not sure wether to leave the cat in.
has anyone done this previously and does anyone have any videos of their astra straight piped?