hi peeps slight problem thats nigging me when i start my car and idle for a couple of mins before i set off. when i set off put my foot down it seems rather laggy and when you hit higher rev range it seems to miss pop and bangs and holds back but this is only a problem when cold after a drive of 5-10 minutes and i turn car if for 20 mins and start driving again it is fine any ideas i was guessin plugs or coilpacks but i replaced plugs not long ago any help appriceated