I had a C6 Z06 and there was an aftermarket module available (Mild 2 Wild) that allowed you to select the flapper (open or close) by using a remote control fob.
The install was the removal of a fuse and replacing it with a fused transmitter that spoke to the fob. It cost around $100 and gave you open pipes on demand.
http://www.nakidparts.com/id25h.html