The RcR pipe and silencer are "LOUD". Particularly so if you have not changed the packing for a year or so. We've change ours every year. It does help for a while. If you want loud, without the packing it's brutal. But that also hurts the hp output when the packing goes bad of is missing. Noise does not always make hp in this case, Change your packing yearly for max performance and noise reduction. It's noticeable.