I can say I have had the bms occ since the version 2 came out some yrs now and my high side had very little to almost none at this point.over this past summer I went with a low side alongside my high side with a added valve cover breather(my opinion a must have for relieving boost in valve cover under boost),highside still dry but low side I see oil.not a lot but guess the normal amount.so I would say the low side is a must.since your not under full boost while driving low boost,cruising where most are us where the lowside would come into play.
I went the custom route for catchcan but still serves the same effective purpose.
I went the custom route for catchcan but still serves the same effective purpose.