engine revs holding

My revs seem to be very slow at falling, (just in neutral and revving it) is this normal? If so I'm after a lightened flywheel lol

Can anyone link me to a video of a 197 being revved?

Thanks in advance

Kieren
 
Inlet manifold (Or other) air leak would be my first guess....

Hanging idle is often a symptom of this.

And no - it's not normal.
 
I would say MAF sensor, played about with mine and the slightest movement gets the engine juddering and revving different...