The subject often comes up: when you get a new or aftermarket muffler for your E30 M3 how do you attach it
to the catalytic converter section (or center resonator if you are that way inclined)? From the factory the
muffler is attached to the catalytic converter section through the use of pressed on clamps. They are not
really intended to be reused but with a little persistence they can be used a second time. I managed to do so
by using a BFH to get the new muffler inside the clamps.
But this is not a desireable solution, it is merely doable. The right way to attach a new muffler or new center
section is to employ reusable clamps. The factory actaully makes such a clamp and they are very nice. Fabrication
is entirely out of stainless steel - even the bolts are stainless. The BMW clamps are shown here to the left.