I know this is a topic that has been discussed a lot in the evo 1-9 area but could not find much in the Evo x. Im looking to install an oil catch can, it looks like there are 2 vent areas on the crank case one infront on the passenger side going to the intake manifold, and another going to the turbo inlet pipe on the driver side. Do both of those need an inline can or does just one? can you hook up both to one can? I have installed cans before but there have always been just one crank case breather.

 

The one on back doesn't collect much.

 

would you say it is enough to warrant the purchase of another catch can? also which is the back one I'm assuming the one that connects to the turbo inlet/ intake?

 

I almost want to installed one just to keep the intake clean of any oil, and help smell since I am running a test pipe

 

Disconnect your intake from your maf housing and put your hand in the inlet. Find any oil? If so, then you're habits warrants a catch can. If not, don't worry about it.

If you run low oil pressure and never get near redline, you probably won't need one. If you tend to add a bit too much oil (or the manufacturer recommended amount) and hold revs of 5k rpm for more than few seconds fairly often (HPDEs), then it'll help.

I'd be more concerned about keeping oil out the turbo, but if you're gonna get 1 can, get a second too. they're cheap :P