Yoshimura R&D’s innovative exhaust design drastically improves mid range power between 4,500-7,000 rpm by up to 8HP and 10ft-lbs, all while producing less emissions by utilization of a 3-way catalytic converter.
Yoshimura is full of shit if they want us to believe this clogged up slip on makes 8hp and 10ft of tq between 4500-and 7k when the open slip on with a PC will not make those gains. I bet you will lose 8hp up top if anything. Oh well I'll run a normal pipe and just ignore the law like I have always done. I don't even know anyone that has ever been given a ticket for an open exhaust on a bike but I have neve lived in Cali either