R33 Series 2, GTS-T Manual, stock apaprt from turbo back exhaust & k&n POD filter
ok, still hesitating/surging after 4500rpm, cant work out what it is, so far the following has been replaced (not neccisarily to fix this problem)
fuel pump, plugs, coil packs, fuel filter, timing belt, water pump, k&n filter, clutch, injectors cleaned, serviced, turbo back exhaust
it went on the dyno yesty and it showed no change in the air/fuel mixtures when it was surging,
so is it coil pack igniter module thingy? timing? ?????????