this has been going on for months but time to get sorted car drives mint most of the time now and again i pull up at lights go to pull awy quick and it just dies for a couple of secs then pulls away,its worse when i pull up at a a round about and try to nip out in front of a artic burggh just dies then takes off any ideas.its not cat sensor aint got fault code stored has kn but tryed original airbox still does it.