[s-cars] Couple of questions

[Brian Armstead]

Some newbie questions for you all:

When I shut my car down after a hard run, should the main fan come on? 
When I used to shut down my '89 200q and '86 5Kt, the big fan would
always come on as soon as I shut down my car.

Also, when should the aux coolant pump cycle on with the S4?

Lastly,

When sorting through my large collection of type 44 goodies, I came
acorss a wastegate srping with light green markings painted on it. 
Anyone have a clue if I can use this to obtain moore boost?

Thanks,

Brian

93 S4