After testing i can say the bike is running lean more than all carb models. But its worth money and buy one, dont allow people to hate TPI models, they are great bikes.
KTM TPI EXC 2018 models are running very good in low revs at the bottom end, but on top end the bike is running lean, maybe that is ok but its weird. So EXC250 TPI is using a lean mixture of gas and air.
Its great bike but its not perfect, also i need say carburator models are also not perfect. And i dont know why people hate this model so much, also 2017 ktm model had big problems with mikuni carb and now after one year for all people mikuni is okay but now everybody is hating the KTM EXC TPI 2018 models.
For me the bike is great not perfect but its great, i am not pro rider so its working for me. Also this is first year of tpi models they will improve in next year !