Is it necessary to disconnect the battery (and for how long?) after installing the POP Charger in order to reset the ECU? The directions that came with the unit don't mention this but I think I remember someone in the forum talking about something like this. Thanks!

No
 

It's not necessary, unless you like having to reset the clock and your radio presets. People are gonna disagree with me on this but the fact is I never did it with my intake and my Max dynoed higher than any other NA Max at the local boys DC dyno meet and matched the best dyno of anyone else at the NorthEast dyno meet (the other guy had intake, ECU, y-pipe, UDP, high flow cat and cat-back to just my Stillen intake. It won't hurt anything to reset the ECU but why bother, it WILL adjust on its own.