Test Driving RS4 - V8 Questions

[e36graduate]

I've only tested out one B7 RS4 so not sure if this is a problem or not.

Okay, car warm, sitting in neutral, clutch in, rev it up to like 4 or 5 thousand rpm's and let off the gas......as the RPM's come down to about 3K, you get a noticeable shake/rumble in the motor....I think thats what I'm feeling. As the RPM's drop to idle it is smooth..... just about half way as the rpm's come down it feels like the motor is rough.

[e36graduate]

Can someone post a vid of a cabin drivers seat pov of the v8 revving? I would like to see how the revs come down and if it is normal for the revs to gang a little as they revs come down just before idle