GMC/Chevy, 2007-2011, 6.0L - MPI Performance Plus Series

MPI Performance Plus Cat-back SystemFor 2007-2011 Chevy 6.0L engines, this is our most aggressive sound option. The 10-series muffler design delivers intense exterior noise while maintaining a mellow interior with zero in-cab drone, thanks to our patented Pulse Chamber design. Performance Dyno Results: Gains of 21.83 hp and 6.09 lb-ft at the rear wheels over stock at peak performance (No tuning required). Fuel Efficiency: Most Trucks see a 2-4 MPG increase compared to stock but results may very. Customizable Sound Options Choose your preferred sound level based on personal preference. Guaranteed No Drone: Ensures a comfortable, drone-free cabin experience, even when towing or with aggressive sound options. Design & Construction Quality Materials: 14-gauge aluminized tubing designed to withstand harsh environments. Anti-Rust Coating: Features a high-quality anti-rust coating for extended durability. Patented Exhaust Pulse Chamber: Patent #11713700 optimizes exhaust perfor