Originally posted by dstock:
Question overall is will welding the cat to the y pipe hurt anything? I know with the bolts that were in there it could move a little but and a weld will not do the same?




That appears to be an SVT flex joint. If you weld that solid to the cat, the whole exhaust system will take the rotational torque movement of the engine. That could result in a broken/cracked exhaust manifold or worse. Need some flex in that location...


Must be that jumbly-wumbly thing happening again.