i too broke the egr tube when trying to take it off when i first got my car. I tried just about everything, i tried jb weld with the cast type muffler wrap around that (15 layers). no matter what i did the muffler wrap would blow out, and the jb weld would eventually either melt off or just crumble.
i ended up making a plate to block off my egr, and plugged the port in the header
