You're 100% correct. I've been playing with my idle a bit lately. If you turn the idle trim screw too far out (CCW), you WILL get a hanging idle....guaranteed. Turn it back in (CW) so it's only open about 1 full turn or less from fully closed and you're hanging idle disappears. Turning the trim screw definitely adjusts the dashpot function on these cars.urban96 said:when i first installed my BBK 65mm TB i had really bad hanging idle at about 2,000 rpms. i turned the screw in (was out about 6 turns) all the way and only opend it back up about 1/4-1/2 a turn and no more hanging idle.
worth a try atleast
