Just had my ZX9 re jetted and set up on rollers on Friday.It seemed to be fine whilst there and i was told it was very lean as it still had the standard jets in it.
But after getting it out for a blat today it is now coughing and spluttering almost like a misfire when you give it the gas at low revs(sub 5k) at high revs it runs fine...

It isn't a dyno jet kit just larger main jets, plugs are very light almost white on electrodes and i cannot see any obvious air leaks or pipes not connected?


I will be ringing the tuner tomorrow but was looking for any ideas really?