well toby the car runs absolutely fine, i do get bad boost creep its set at 1 bar but hits 1.1 its done it twice in 3 days, but it dosent seem to have effected the car as far as i know
i think you may be running lean/rich after boost creep and its causing a misfire, get a decent boost controller and make sure you set up the fueling and see what happens from there>?