Tuner Challenge is the exclusive soundtrack compilation CD of the Turtle Wax Presents Tuner Challenge reality series with 13 episodes airing on Spike TV beginning Sept. 2005. Tuner Challenge will be the most exciting and informative car audio enthusiast based series yet! Tuner Challenge pits two teams of five installers in a non-stop, 72-hour marathon, where specified parts and accessories are installed on two identical stock vehicles, tuned and presented to a panel of National Custom Car Association (NCCA) judges, for a $5,000 weekly winner-takes-all prize. At the end of each episode, the teams" installations are judged by using the official Pandisc Tuner Challenge CD in the systems to test for SQ (Sound Quality) and SPL (Sound Pressure Level). Pandisc. 2005.