With exhaust and if you are still running stock/modded intake box and not a pod filter. you should be fine. The stock ecu should/will trim the base maps within few miles .... Make sure when you start the bike & ready to take off, don't go to WOT instantly, use lower throttle positions 0-60% in closed loop to let the bike learn and trim the maps for few miles then let it rip. and you will be fine..
Braap