Great sounding muffler, i have the 4040xl on stock pipe without a cat. Since the stock muffler is offset and the new one is straight through it push up my tail pipe up real close to the bed. I didnt have a tip or anything on it and the noise was crazy loud. It didnt come in contact with the bed but the exhaust sound went under the bed and amplified. I put a tip on to extend it past the bed a little and it sounds great. Not too loud either.