Review on Flowmaster Pro Series 13012100 Muffler - 3.00" In/3.00" Out, 12" Length by Antonio Lofton

(3" 3" outlet) Comes stock with 70 Hd (3" 3" outlet) on factory fitted 6.2L -Used 3.5 inch tubular boilers. to 3 inches, then increase to 2.5 inches. Factory resonators remain at the ends of the exhaust pipes. Interior volume and hum have been greatly reduced, and a deep, harsh growl can still be heard outside. Both factory dampers are cut out. Before that there was a Super 50 Series 3", but too loud and too much hum in the cabin.