Crankcase evacuation kit!?

Guitar Jones said
Well if you are really looking for a performance gain then a vacuum pump set up is where it's at. Could be worth as much as 30 HP over the pan evac system.

I believed that until I tried one... I still run it, but it was worth zero in the way of ET or MPH over a simple pan evac. I have low tension oil rings, run 5in at idle and 12in max. From what I understand a pan evac will pull about 5in max.

I suppose it could make some power, but since it uses power to drive it it's a wash...