Found this nifty little device to add to a C6 Grandsport or Z06 with NPP exhaust. NPP is a baffle in the muffler that opens under certain loads to open up the exhaust, similar to cut outs. This little Mild to Wild device allows you to control when this opens via a remote control It simply replaces the fuse with their inline fuse, and a ground. Easy 5 minute installation - allows you to go straight exhaust at your one personal timing. I bought one for $70 through Amazon, but have seen them lower priced and higher at various locations.