Well, I swapped out my muffler again today.....I believe this makes my 11th muffler to date. If I recall correctly, I've had 14" Magnaflow, Borla Pro XS, Spintech 9000XL, Black Widow Venom 250, Solo Performance Mach 44, Flowmaster 50HD, Spintech 3000XL, 18" Hearthrob, Spintech 8000, 24"...