Either turn off o2 in fuel map cells by selecting them and pressing "O" or increase o2 feedback temp to 200deg.
Its all in the documentation available from the documentation area.
thanks nanook , just as handy to put up a post and it will be there for the next person with the same question.
the sr20det nistune has a feedback switch just didn't know if i had missed it, i work on a lot of different ecu's hard to remember ever bit of every manual i've read