11-27-2013, 04:40 PM
(11-27-2013, 11:32 AM)Deanohh_imp Wrote: As a pollution control method, the ecu opens the valve at certain times to allow fresh air to be drawn through the reed valves into the exhaust to provide extra air to complete combustion of gasses that have incompletely burned inside the engine. The popping was always there but you start to hear it with a louder exhaust. Its harmless but some guys don't like it..... Some do.I like the deceleration popping sound.
(My old Transalp had it even stronger - I liked that too.)