Dual Exhuast Pop Stopper

Here’s a simple, quick fix for annoying decel popping on pre-2009 Touring model bikes with stock headpipes and low restriction, straight-through style mufflers. By nature of its crossover design, the left side pipe becomes a source for exhaust reversion (inbound fresh air) due to the natural in-out pulses of the exhaust pressure wave. This can affect the oxygen sensor readings and causing the system to change the mixture which can result in decel popping. This simple device reduces the inbound flow from the left pipe and stops fresh air from reaching the sensor. Remove the left side muffler; install the Pop Stopper in the headpipe at the muffler joint. Adding this product will have little to no effect on power output.