Hey guys im new to the wrx world and turbos in general. Freaking love the car, cant get enough of it. Just got one problem though. It has a misfire when boosting in mainly in 3rd and 4th at around 5000rpm. Havent replaced anything like plugs or leads or coilpacks or anything like that, so could be one of those but mainly just after any ideas on what it could be. Help would be very much appreciated.