Thanks Joely - I will have a better look in the morning for the idle control screw. New coil packs, injector plugs and spark plugs have cleared the lumpy running but I am left with a high (1400rpm) warmed up idle. Haven't adjusted the idle for 20 years and has always been rock steady at 800ish so not convinced that is the problem. No Consult errors. Any thoughts appreciated.
I am not using an aftermarket boost controller so leads are still a mystery.
Thanks again Martin