Why do i have excessive exhaust popping on decel
If there are no intake or exhaust leaks, the main reason for decel popping is running lean. The EPA requires that the stock ECU (engine control unit) maintain a very lean A/F ratio (air to fuel ratio). By running so lean there is incomplete combustion and these gasses are ignited in the exhaust when they meet fresh air and the heat of the pipes. Bypassing the air injection system helps with some bikes, but rarely on the Vulcan 1700.
It may seem counter intuitive, but adding more fuel just off idle generally stops decel popping. The only way to do this on the Vulcan 1700 is with a good aftermarket fuel manager like the Power Commander V or the EJK Gen 3 controller.
×