I would agree with Pouchbro about the fried foods and tomato based sauces. Both give me butt burn for sure. As do spicy foods. They burn on the way out after I've eaten them (although I've found the gel inside my aloe vera plant worked really well to cool it off. I'll have to try it again to see if it was fluke).
Regarding the carbs (starches and sugars), I think it's not so much that they have an immediate effect. It's more a longer term issue of developing an imbalance of bacteria which could lead to pouchitis. This I think would be especially the case if one's not taking in probiotics in food or supplement form. That's my understanding anyway.