DynoMax Performance Exhaust released a new cat-back system for the 2006-09 Pontiac Solstice/Saturn Sky. The company said it posts an improvement of 4 hp and 4 ft. lbs. of torque. The new system features high-quality, 409-grade stainless steel intermediate pipes and tail pipes, which provide extended protection against corrosion and discoloration. The company said it included a 3-inch polished, stainless steel tip and OE-grade stainless steel clamps and hardware.