It’s been sat for 2 or 3 years just getting occasional started up to try & keep the engine lubed, I just got it back on the road today. It passed the MOT fine it’s running very well off boost.
It seems a bit like its dropping to 3 cylinders under boost so I’ll check the coil packs and plugs. I haven’t touched anything on the engine since it was last on the road & it was running ok then.
The only issue I found when it when last on the road (after fitting a gizmo boost controler) was it running a bit rough at standard boost level, but it used to run very well at 15 / 16 psi. It’s still making that boost fine but coughing badly when doing it now.
Any suggestions other than plugs while I go & check them?