ok so i've been noticing my boost gauge having some {what may be} "weird" activity...
soo over the weekend in jerzy it was raining like h*ll and it noticed that without even punching the gas that i was getting boost with even the slightest acceleration. And even at a rolling speed at operating temp with no acceleration i wasn't getting total vacuum.....
and for today it was rather warm, so the night was pretty humid and i noticed the same activity.....so...is this normal...or do i have problems?? also, i've heard about supercharger oil....is there a way to check and see if its low or if it needs changing? thanks

Normal on the boost. Cold air is denser. And if it'* also moist in addition to cold, the same effect.

Try the BCS mod. It'll be like that ALL the time.

SC oil is in Techinfo.