[BetaDnB]

Originally Posted by stang74shelby

I thought it was from the Dual Mass Flywheel (I think ours has this)
http://www.cdxetextbook.com/trans/cl...flywheels.html

We have the dual mass. My thought is this; when you're in gear not using the gas, you're in DSFO mode (deceleration fuel shut off). When you put it in neutral - in this case disengaging the clutch - the injectors fire briefly slightly raising the revs.