| I know of no other manufacturer to offer a heavy duty manifold. I read a while back where the performance modules for diesels can/will crack the manifolds with the high temps. They have to have silicon impregnated iron. I read that Chevy did this but its manifold has a restriction (forgot which side) that impedes exhaust flow. The cat or turbo back exhaust upgrade would at best, only improve this flaw. The temp probe port is a good idea. I wish it had come out sooner when I was busting a knuckle drilling that port. |