Pedro's TechnoFlow Hi-Flo Air Intake

[Spyderman]

So, before I embark on assembling and installing Pedro's TechnoFlow Hi-Flo air intake, in place of the somewhat restrictive factory air intake tube on my 2001 Boxster 'S', if any members have performed this DIY project, what is the perceptible difference in sound this device produces?

I'm just curious if anyone can describe what the sound dfference has been after they installed Pedro's less restrictive device. I know it's going to be a subjective response, but there has to be some sound that people have equated hearing after installation of this device. Sounds like...?