ok im trying to get the part of the egr pipe that bolts to the headers. (2 9mm bolt heads)Ive tried a torch, got it bright red hot, stripped out the nuts. Have a stripped bolt socket, got it hot hot again, wont budge. Tried cutting it, (i used this blade to cut the egr pipe in the first place when i did plenum first time.) and it cut until i got to the bolts then dulled out my blade. bought a new blade, one for the thickest metals, and it actually dulled that too.

I dont want to take off the headers to get these two dumb f'n bolts out. any advice would b great.