Engine dies when hot, in gear

It's easy and cheap enough to get a filter with a vapor nipple on it. 85 Omni 2.2 5/16 though and run a return like to the tank. There's usually an unused nipple on the pick up assy. Give it a try. Two little pieces of rubber hose and hard line.
Your high performance blue module is suspect as well. Had a friend with a similar issue. I gave him an old SMP LX101 I had in the garage.....all better.