I've just finished putting my ofac efi engine into my xr2 and upon cranking it seemed to be smoking a fair bit.. Anyhow, I replaced the valve stem seals and it seems a little better but now it seems to be idling very lumpy, as if its over fuelling, and still smoking a little!! When putting the throttle down it isnt very responsive, coughs and splutters then the revs start building up (as if it were a carbed car that was overfuelling). Any ideas as to why this is happening? It has a stg2 ahmed chip, beige injectors, stg3 head, cossie t3 and low compression bottom end.

Any ideas what I can check?
Cheers
Chris