Reset "base idle"?

[KWAWD]

What is the consensus here about "reset of base idle" after battery disconnection?
I've read mixed views, with some saying it must be done (hooking up to a scanner and adjusting it) and some saying no need and the ECU will figure it out automagically.
What's the real position?

[Madmagna]

If you base idle was correct prior there is no need to redo after reconnect. All depends on where your base idle was set prior to the disconnect

[ammerty]

Its not needed. The ECU should sort the base idle out by itself if it was fine before.

[KWAWD]

Excellent. thanks!

[MadMax]

Just be wary of the idle after you have disconnected the battery for a while.
Both my third gens refuse to idle after a disconnect. Takes quite a while for the ECU to bring it back up. Not fun stalling the engine at a traffic light, or entering a corner with throttle off. I need to keep the revs up with the throttle, allow the revs to drop down to almost a stall, then bring them back up with my foot. Repeat until it's steady. I normally do this stationary. Bit of a pain if you try to rush the process and drive off early.

[Pombonted]

Does base idle reset need to be done with special equipment or can most mechanics do it?