Are these necessary?
 

stainless steel exhaust flex joints, if you have a high performance motor should you consider putting these on? are they worth getting?

If your exhaust is hung from the frame with rubber isolators, then these are not needed. They may help a little if your pipes are secured real tight, but they are a PITA when they rust out after 5years or so, even though the rest of the exhaust is fine.

I just get my pipes welded straight to the headers and dont worry about it.


High performance motor has nothing to do with leaks its weak motor mounts. I run solids and dont have leaks Before i went to solid i would have to change gaskets every few months Now gaskets last untill i pull the headers.

i put one of those on my straight 6 cause i kept going thought exhaust doughnuts. it helped. but i dont have them on the V8 now.