Hey im getting an occasional misfire on cylinder 5 when in the range of 200km/h lol. 6th gear going 180 if i go heavy on the throttle or even half i get a misfire ALWAYS only on cylinder 5. New ignition coils, ngk’s 97506 2 step colder gapped to .022, could this be the injector in bank 5? It has happened at least 4 times now in cyl 5 only and its a constant misfire so it doesnt go away until i shut the car off. I also have some o2 sensor related codes that only pop up when it misfires: 2C3E, 2C7B, 2C7C. Last time it happened when i started the car back up it was struggling to come alive like barely turned over but i quickly shut it off and tried again and it started up. 2008 BMW 335i, vrsf 5” stepped fmic, inlets, bms chargepipe, cts intakes, mhd stage 2+ 94 oct, catless dps, fbo etc...
