http://datazap.me/u/steve99/e85-200k-learn-155?log=0&data=1-2-3-9&solo=2&zoom=390-720
above is log of my car running oft E85 tune, unmodified and completly stock car , so it does not occurr on all cars
i am now running with catless uel header still no issue on standard oft tune E85.
currently running modified oft E85 tune to suit our high grade guaranteed 85% ethanol pump fuel here , still dont get that issue.
not saying it does not happen but must be some combination of fuel car mods ect that causes it.