various generations of iPhones, Samsungs, and vairous cam-corders and GoPros) there is no reliable way to determine the actual sound output of a pipe via Youtube without an accompanying dB meter graph.
Youtube videos give a good idea on the overall sound 'quality' of a pipe, but given the auto gating and other sound attenuation of the typical recording devices (i.e. Thanks for your input Mike U., I have watched hundreds of Youtube videos of various exhausts and the Road Rage series is slightly ahead of the Pro Pipe, but I've seen some Pro Pipe videos that have made me say, 'Daaamn!'.
