appear to have sorted the issue. I did 3 things :
1. Remove the MAF plug, clean the connections and reconnect and secured tightly with a cable tie. I'm told this was part of a dealer bulletin..
2. Remove TB harness plug and clean with contact cleaner and reconnect
3. remove intake pipe and noticed a sticky oily film around the throttle butterfly. It was really sticky.. So cleaned the TB with throttle body cleaner and removed the residue.
Car immediately feels better and has so far been trouble free. Will keep the thread updated.