Supercharger / spotting AI

[The Stalker]

Hi everyone. Not so an active member here, however an old IL-2 fan. (played with longer pauses for the last couple of years)

I hope it's okay if I post a couple of questions here. (4.12.2)

1) Firstly, what's the deal with the supercharger? When flying the F4U I can see a noticable amount of manifold pressure gained if I toggle to speed 2 immediately at ground level. If more MP = more engine power, are there any side effects in switching to speed 2 right from the start and not at recommended 2000m?

2) How do I report enemy planes to my (AI) squad if I see them first? It says in the manual that you have to center the view on them, but nothing usually happens if I do so. Usually on night flights I sometimes see the enemy first and want to report it to my AI guys in my flight.

3) And possibly related to 2) What does the W:Bandits command in the radio menu do? How does it work and when do you use it?

Thanks in advance.