well the 1st one the welds broke because of temp issues and the exhaust was not supported, It broke off and i grabbed it with the sleeves of my flight jacket and it burned the nylon it was made of lol, shouldve wore my carhartt! anyways i had a extra muffler tip so i re welded it up when its warmed up outside and welded a flange on the bottom and made a support out of aluminum flat stock, its loud, I think my exhaust gasket has a leak and it backfires cool blue flames, but it is slightly quieter than the stock one, but all the neighborhood dogs bark alot more. the flames look real cool at night when i shut it down.