Keep in mind in that vid, I was kneeling on the passenger side. Set Barney, set the camera, than reached OVER the center console and 'blipped' the throttle with my fingertips. I don't think it went over 2000-2500 rpm'*. Smacked him good.
From a noise level perspective, cruising at 60mph with the windows and roof shut, opening this thing is nearly deafening. Bo'* ears pin back in a manner inversely proportional to the valve position.
From an outside vantage point (which I haven't heard while driving), two members heard it last night. Greyhare in his driveway (and as I pulled in and left) and another member as I passed the gas station he works at. I saw his head snap around.
I'll get a better performance 'feel' for it as soon as I get my wideband O2 installed and start getting my fueling straightened out.