Noise levels of different exhausts

Does anybody have noise levels of the different exhausts that SIP sells?
I would like to know how they compare regarding dB levels, and if that is not possible
perhaps someone knows by experience which ones are loud and which ones are sillent



What's your configuration, because the db level is not the same.

please notice that the noise level also increases when the pipe 

a couple of kilometers


on my scoot after 2000 km the noise level was defenitly higher