If I eat too fast I can get some grumbling.
Pouchitis definitely plays a role for me. Since my pouchitis has been in remission, my gut has been pretty silent. Peppermint supplements helped with my churning gut when pouchitis was active.
For many people (even with a colon), stress and anxiety plays a role. IBS and IPS definitely have a nervous system relationship.
I never found specific foods to make a difference, other than hot peppers giving me hiccups.
I presume it is all very individual.