Yeah 6 months from JPouch my tolerance seems to be improving too. I used to pride myself on being able to eat any food, on holidays in local restaurants i often like to ask the waiter to 'surprise me' with their favourite dish, and it not needing to be toned down for me.
Since the op i struggled with anything, even if just based on curry powder, but recently I've progressed back to medium strength spice. Basically the hot Chinese dishes or the medium Indian Curry's. Something like a Singapore noodle or Balti is now reasonably comfortable for me.
I think the key though is avoiding the bum burn. If the anus gets sore then it gets sensitive to pressure which makes me feel i need to go more! I use sudocrem right before using the bathroom, then blot (not wipe) after the loo, then clean the area with water, dry fully, use calmoseptine or equivalent. It certainly helps me significantly. I guess the mix of tomato acid and actual spice is savage on the behind!
If your cramping that's probably gas! Could be something doesn't agree or could be combination of foods. For example i combined a yummy home made veg soup the other day, with a slice of Hawaiian pizza. I can eat individually with no issues, but the combination of fruit and veg seemed to bloat me bad.
Are you sure it's the salsa and not the did you had salsa with that's causing you issues?