So I have about 15 hrs on my bike and thought I would give my opinion. First off what I have done is fmf slip on, comp ecu, dunlop mx 31 for front and have set my co to ten. My map is all +3 on the fuel side and all +1 on ignition side. This bike is awesome!! I ride in michigan (sand whoops and twisty) and put the bike in third gear and can pretty much leave without using clutch. No matter how low the rpm drops in third I can roll the throttle and it just pulls your arms off. Whoops full throttle in third or fourth and tracks straight. I have had kdx 250, cr250, ktm300 xr 400 and this bike is far better than all of them. I would recommend trying the above map, is seems fuel delivery is about perfect. If your having trouble starting your bike after you fall or stall I recommend this. Hold full throttle and turn over for 2 or 3 seconds and then let off throttle then hit starter again. Mine fires every time.