I am trying to install my magnaflow cat back and I have run into some difficulty. I can't get the bolts off the catalytic converter. They are rusty and I don't want to break bolt off b/c then I have no way of getting them out. I have put wd-40 on them and they aren't loosening up. Anyone have any experience with these or any solutions? Thanks for the info.
Chad

 

Most exhaust shops use impact guns. They amy still break though.

 

Heat them up with a torch.

 

Try using a product called PB Blaster, you can get it at wal-mart or advance auto. The stuff works better than WD-40. Otherwise do like asian sensation said.....break out the old Torch

 

My dad and I let it set for awhile with the wd-40 and they finally came loose. It took a lot of force but it is all done. Thanks for the help and I gotta say it sounds pretty sweet.
Chad