Hi i was wondering if someone could help me with a boost problem. I recently imported an R34 GTT from japan. Its in good condition with lowish ks (90 000) and runs fairly well when driving normally, however, whenever i try and give it a little more boost than usual it breaks up and starts misfiring, it sounds pretty shit and i loose all my boost. The problem usually kicks in at around 4000 revs. If someone could shed some light on the situation it would be much appreciated, im fairly new to the import scene and this is my first import, its really annoying and i dont really have much of an idea of what it is or how i can fix it.
