Yeah, no doubt they are some loud ass pipes.
I have a polini wannabe pipe for hobbits that I rock that is way more quiet.
Its funny because the baffle on the polini pipe is inferior. Its thinner and shorter and exhaust shoots out the rivet holes.
Its because the polini is a thicker gauge metal than the proma. This makes the polini less loud, but a lot heavier.
What I am trying to say is you could put uber baffle silence king on a proma, and it would still be loud.