so I recently removed my downpipe from my a4 b7 and I have run into quite a problem... (installing test pipe only)
after struggling for days to undo bolts and remove the pipe I finally got it out yesterday only to run into another problem. where the test pipe and down pipe meet all the bolts are extremely rusted along with the assembly itself. I'm not sure what to do. it looks like no amount of penetrant will work. I'm thinking the only way to get through is to cut through the bolts and gaskets. has anyone ever run into this problem before?. if you guys have any recommendations on tools to use to make the job more efficient, do tell.