Arrow Exhaust Vid w Baffle Removed

[SUPERCRUZ_imp]

dr_rock - Do a search on PAIR and review the various threads on the subject. The PAIR (Pulse Secondary Air Supply System) introduces fresh air into the exhaust gases in the exhaust port. This function is controlled by the PAIR control valve. The purpose is to continue to burn any unburned fuel air mixture in the exhaust stream to further reduce hydrocarbon and CO emissions. Adding after market exhaust systems to these bikes usually leans the bike out a bit and may result in popping or slight back fire upon deceleration. Closing off the air inlet to the PAIR system in the air box renders the system inoperable and will eliminate the popping. From what I am told and have read, there are no adverse effects to the bike.