07-31-2017, 06:54 AM
I emailed Yoshimura. Here is the official answer.
"Thank you for your interest in the Yoshimura products. This exhaust was designed to work with the stock settings on the motorcycle. Some customers have added an aftermarket fuel controller to help fine tune the motorcycle for race use, riding conditions, climate/elevation, or engine modifications."
"Thank you for your interest in the Yoshimura products. This exhaust was designed to work with the stock settings on the motorcycle. Some customers have added an aftermarket fuel controller to help fine tune the motorcycle for race use, riding conditions, climate/elevation, or engine modifications."