hey guys just bought a gtr r34 vspec 1999 model very happy with the purchase although there was a slight issue i wanted to raise maby someone can guide me in the right direction. im getting like a misfire when boost comes on then it smooths out as the rpm hits about 5k would this be a coilpack issue (still on stock coilpacks) or sparkies if not could it be something like boost leak etc.. feels a little lacking in power (first time in a gtr) car is completely bone stock,
any advice would be appreciated cheers ps i am changing the kit.. came on the car:P
