Hi i got a similar problem but my r32 is running on 5 cylinders number one cylinder is missfiring the coil packs and plugs are good ive only upgraded fuel pump and malpassi rising rate pressure regulator but i think it might be just the ignighter pack. I got the car tuned for my wolf 3d v4 and the fella said that it was running good but than started to miss fire in number one cylinder. Any one got any suggestions.