It nearly runs - errrr - So close

[HandyAndy]

i think its a bit of both Nick, needs to warm up & with lack of back pressure & maybe drawing too much air can cause it to idle roughly, i,m sure it,ll be right when you get the exhausts on & it warms up fully.

i used to have a 2.8i capri & it ran rough when a sensor went in the air mixture do da, but was a cheap fix & it sorted it.

cheers
andy