Not pouchitis (I don't get it very often) but an irritated pouch when I do sudden diet changes especially overdoing certain fruits or veggies (persimmons, pumpkins, carrots etc all orange kills me).
Whole grain pasta turns to concrete in my pouch and I might as well call the ambulance before eating whole grain rice.
Moderation, especially when changing diet, is the word.
I have my go-to diet whenever I have overdone anything...soups (blended), probiotic yoghurts, no carbs (fine, occasional rice or English muffins) and a bit of juice.
It is all trial and error for us.
Sharon