Diconnecting helps for warm starts; not good for cold starts. At least that's what I experienced on my 16V. So far (fingers crossed), my idle has been fine. The last thing I did to make it so was install new plugs (Bosch Copper), torqued to 15 ft-lbs Prior to that:

new Fuel Pump Relay
new OVP
new Idle Control Valve
new cap
new rotor
new injectors and seals

Waiting to be installed: new Deceleration Microswitch and Dual Coolant Temperature Sender

Brian16V