[Tainen]

Originally Posted by Ranatsu

But what about all of the header designs on subaru's without flex joints, they always crack at the flanges.. Borla, gt spec, perrin, all of them seem to do it. The only exhaust manifolds I have not seen crack, are the ones with the flex joints.

Its honestly the only reason I never switched from the factory manifolds on my STi.

I wonder if stiffening up motor mounts would have an affect?