• Redesigned For Improved Performance Sound And Durability 
• More Power Less Resonance 

PRT (Purge Resonance Technology) mufflers are now available for some Porsche applications. This radically new B&B technology "tunes" the exhaust note, allowing a nearly straight-through design in most cases. The result is pure German performance sound at idle and under acceleration, while the interior cabin remains a comfortable ride at cruise speeds. Once again B&B advanced technology has proven why it is the leader for superior performance and sound quality in exhaust. Legal in California only for racing vehicles which may never be used upon a highway.