Since we are talking about the PCV system here, I thought I'd post re: the PCV re-route I just did on my new ride, an '02 Subaru Outback. The Outback has 139K on the odometer and it's the EJ25 4cyl 5 speed manual AWD version. Since I got it last month, it's had an oil change, new air filter, and was just given the RVS engine treatment. I did a 50 mile "Orange Test" MPG run recently and saw just under 30 MPG hiway.
The PCV re-route was blissfully easy on this engine.
Since I didn't know where the PCV valve was I just searched on Youtube, and located it within 5 minutes. Passenger side of engine atop the crankcase, the PCV hose leads to a vacuum nipple on the intake man. plenum close to the TB.
Like my other Subaru, Subie, there's a crankcase breather hose on each side cylinder bank valve cover. Each hose goes to the corresponding side of the air filter box. I already had spare hose in the 2 needed sizes, and even had a metal hose tee to complete the job in a parts drawer. This important part of the whole Gadgetman system of mods was zero out-of-pocket cost to me.
I pulled the stock PCV hose off, then the PCV valve. Sprayed it out w/ brakecleen and shook it to verify it's good-it still rattles. Replaced PCV valve, capped the man. vacuum nipple w/ a vinyl cap. Pulled driver side breather hose off airbox, added metal hose tee, added short piece of hose, pushed said hose onto airbox hose nipple. Ran new piece of hose from PCV valve to metal hose tee on breather-to-airbox hose.
Start engine in driveway, verify it runs OK, no evident issues.
Done. It took wayy more time to describe it all than it took to do it.
I'll add pic's here to help show how it looked. Ask questions, if unsure of what's going on w/ this mod.
Tracy G