All I can say is that as someone who is currently shopping for a crem-del-la-crem pipe seeing a dyno graph is useful information. Along with current owner reviews. The builders of pipes that are willing to show there pipe on a dyno and what it's potential can be are the ones earning my attention and in the end will likely earn my business and my money. These pipes aren't selling for $300 they're a decent chunk of change and probably the most important perfomance mod anyone will make to their machine.