Hi new to the site so hi people...

Having massive problems with my A3 2.0 tfsi. Was driving the other week and on idle the car started the miss fire the the engine light come on. Later I had it pluged in to find injectors 2 and 3 where not working. I have changed these now but the problem is just the same. only mods to the car is a Forge 3 stage bov and air in take system. Any help or ideas would be great thanks Tim