Hope I’m right here;-) and that the bumper sets off at my A6 Avant and too easily on the exhaust (double exhaust left and right one). When rolling out mostly, don’t give gas. Say there’s a kind of rattling sound with a deep bass tone, for which one or the other may be cool, but it bugs me;-) please don’t change suggestions like bumper etc. If everything is checked out and triple made, was worse at the beginning now is already 70% gone, more goes abe r not.. My question is, what can I clamp/glue between the exhaust and bumper so that the noise is dampened, or is started? Does it have to be fireproof? Since the exhaust is already getting relatively hot in the summer? Bzw tailpipes. Does anyone have a good suggestion?