Yes this issue is a fu*king pain in the arse!!! My car does exactly this most the time and am temped to gap the plugs back to standard just to see if they are wholey and soley the cause of this annoying problem! I noted in this thread that C&V have informed a customer the closed up plug gaps are the cause ... do other tuners concur with this assumption? As soon as Blueboost fitted the Nizpro stage II kit to my stock 10,000km BF Typhoon the miss at idle arose straight away despite lifting the idle speed slightly several times since it still fuc*ing persists. BFhoon did you ever resolve the miss at idle you describe above? Cheers Justin