Here is the procedure:
1) Clear idle memory by disconnecting battery for 20+ minutes.
2) Disconnect the Idle air bypass solenoid
3) Reconnect battery
4) Start engine and set idle speed to desired RPM
5) Turn off engine and reconnect the air bypass solenoid
5a) Optional -- set TPS to 0.90 - 0.99 volts (Do not exceed 1.0 volts) Use a digital volt meter from the green wire on the TPS to ground.
6) Start engine and let it idle for 2 minutes with no accessories on.
7) Turn off engine for two minutes
8) Start engine again and run for 2 minutes with
every accessory turned on.
9) Turn engine off again.
Your computer has now relearned the idle. This
procedure assumes a clean ICS valve. If your ICS
is carboned up then this will probably not help.

I am not sure why Best Products (maker of the Pro-M 77) does not include this in their instructions.