Hondata

so i had to return to a basemap from hondata. the 2012 RBC dp one. my idle now surges from 1500 - 700 on idle & while driving. in closed loop. any idea on how to fix. and its also runing very lean -20 - -30 AFR.

Did you make the changes to your tune or did someone else? The fuel trim max percentages have been changed, along with some of the throttle flow settings. Has the car ever run good with the RBC tune, before or after these changes were made?