I have a set of Cobra Speedster shorts on my 2006 Street Bob. They are an extremely high quality pipe and are loud. I have bought the "quiet baffles" to install. Can anyone tell me if they will decrease, improve or have no effect on my performance? And how much will it cut down on the sound? I also have a Kuryakin Hypercharger hi-flow K&N filter and a Cobra FI2000R fueler.