Here's some comments found at Baggers mag.
Next, the stock pipes were swapped out for SuperTrapp’s MegaShot dual system, which is not only designed for bigger-inch engines (103 to 140ci) but features a gradual-stepped head pipe (1.875-inch to 2.125-inch to a 3-inch collector) configuration feeding 2.5-inch disc-tunable FatShot mufflers. Along with the adjustable audibility, the full MegaShot system offers more performance gains—especially with the bike’s already-installed Stage One download tuner.