So following up on this, I didn’t manage to find a leak anywhere. Also haven’t got round to changing any sensors yet as I’ve been away. Car has done around 100 miles so next to nothing all I’ve done it put some cataclean stuff in with fuel..... But it’s gotton worse. I went to drive to work in it the other day, got upto temp and I set off - got about 200m down the road and as soon as I came on a bit of boost it’s started miss firing and eml flashing. Limped it Home and left it and went to work in my other motor. These where the codes I got, View attachment 160876 Following this I’ve swapped coil packs over to see if it’s them, also ordered some new spark plugs as mine looked tired. This was today and I’ve just unplugged the Maf and gone for another short run, as soon as I came on boost again it started missfiring and spluttering and actually cut out, this time the misfire was still on cylinder 1, but had also moved to cylinder 2 from 3. View attachment 160877 So.... I’ve just taken the tip and surrounding pipes off, checked for leaks and there’s nothing. There is some oil in the tip though, and also at the bottom of the turbo housing itself. in terms of play in the turbo - it’s very very minimal, maybe 1/2mm in and out and side to side. Could the turbo oil seal be gone?? There’s no smoke from exhaust. And could this cause missfires? Previous to this I was getting the odd code p0138 and p1176 - directing my towards thinking the cat was on its way out. Thanks guys - hopefully someone can shed some light.