Item #: mcc630202
05 - 08 w/o NPP B&B Fusion Exhaust System - 4" Round Tips
The B&B Fusion is a bi-modal exhaust system, meaning it has two passages, or modes, that the exhaust can travel through the muffler. Each muffler has two outlets, with one side having a butterfly valve which allows the exhaust flow to be shut off, regulating which side of the muffler the exhaust flows through. One side of the muffler is the "quiet" side, and one side is the "loud" side. The "quiet" side is a smaller, muffled and chambered tube, while the "loud" side is 3" straight through tubing.
The butterfly valve is controlled by a vacuum valve, built and developed by B&B Performance Exhaust. On the 2008 & later C6 Corvette with the NPP option, this valve is controlled by the ECU (computer). The valve opens based on RPM and throttle position. Factory exhaust can be very quiet, even with the valve open on factory mufflers. The experts at B&B Performance worked hard to get the right "tone" for your C6 Corvette. In the closed position, the tone is deeper, louder, and more aggressive than stock. Open the valves, and the overall volume and tone increases to the point heads will turn when you drive up, similar to the famous Bullet systems.
Typically the fusion system would only be available C6 Corvette owners that have the NPP dual mode exhaust option installed on their factory Corvette. Billy Boat performance developed a stand-alone kit, which allows any C6 Corvette to take advantage of the bi-modal system. The kit comes complete with all the wiring, mild-to-wild switch, vacuum line, vacuum accumulator, and vacuum switch needed for installation. B&B has used the engine as the vacuum source (which is the same port the factory uses for the NPP) and the installation is simple and straight forward.
The 2005-2008 C6 Corvette system is 2 1/2" and can be combined with a B&B Performance Xpipe for even more exhaust flow. The muffler tips are large round 4" diameter double walled and the entire system comes completely polished and the result is a truly spectacular look and sound that gives your Corvette the look and aggressive sound which will have heads turning everywhere you go.
All B&B Performance exhaust systems are precision built, completely TIG welded, and are a direct replacement for stock exhaust components including all hardware and gaskets. A perfect mix of performance, sound and style for the C6 Corvette. Each Billy Boat Performance Exhaust system is backed by a lifetime warranty against rust, corrosion or burn through and 2 full years against defects in materials or workmanship.