So, my fuel filter was swollen and the hoses weren't the right size. All crappy aftermarket bits!
Also, a the fuel line/thingo under the intake was loose as well?
Was having cold start issues and getting strong petrol fumes in the cabin.
Fixed now, car feels way better.
Also, turbo blanket!
Picked up off eBay for pittance. Apparently "used for 2 track days only".. Genuine Perrin, they're worth a bit brand new!
(Yes, it's upside down.. But whatever. )