Just curious if this is possible instead of a OCC? It's cheaper and I don't really care about emissions. Any thoughts? Please keep judgmental comments to yourself. Would this work? I know it is cheaper than a catch can. I will go that route if necessary. Will I fail an OBD2 emissions test? I will have a manic tune soon so that should take care of me CEL for my catless turbo back exhaust.

 

I may have to run a breather filter as I installed a JCW turbo on an S and now my K&N intake elbow won't fit.

Will let you know what happens. I do already have an OCC.

 

Please do not install a breather filter on a US Prince engine. You are guaranteed to get codes. The ECU measures all air entering the engine via the MAF sensor. Since the ECU software is expecting any blow by to be recirculated into the engine your AFR will be off and the ECU will flag it. The window of tolerance on the N14 is not as tight as it is on the N18 which is why BOV's work better on the N14. Additionally you want the crankcase to be under vacuum at all times. The vacuum helps prevent ring float. On EU N14's without a MAF sensor you won't get the codes but you still get ring float.

 

Ring Float? what?

 

Thanks for letting us know. Ring Float as in Piston Rings not staying put?

 

Correct sir. Also often referred to as ring flutter. I tried a breather on an N18 boost side when doing some research a few years ago. The effects were a CEL, roughly a 10hp loss at ~6300 rpm under high boost and increased oil consumption.

Boosted engines generate significantly more blowby than NA engines. Even though peak cylinder pressures are not too much higher, the average cylinder pressure is significantly higher and this is what leads to our higher torque and HP output. If the rings flutter however they loose seal integrity with the cylinder wall causing increased blowby, further increasing crankcase pressure and also reduced oil scavenging.

I've attached a little light reading for those interested.

 

Thanks tigger, that is some good info.
As we know you already installed the rx occ and is working good so far, right? but i would like to know if your oil consumption as decreased and if so in what rate.

 

Hi sub3622,

Oil consumption has not changed one way or the other. Vlad still goes through about 100cc's of oil per 5000 miles. Now that he's at 50,000 miles I'm going to shorten the interval to 4000. So far I haven't been impressed by the amount the RX has caught. But that may be due to it's location. The BSH can I had located on the front right of the engine bay under the upper frame rail. Mounted in that location it captured more but that's probably because the can stayed cooler. Due to the height of the RX can I mounted it below the hood switch for the alarm system and the can gets much hotter there. I believe the extra heat is either preventing the volatiles from settling or is evaporating them off. What I can say for sure though is that when I pulled the intake pipe off yesterday it was bone dry inside, as in zero oil residue. I always had oil residue with the BSH. I think maybe I'll just have to get a bit more creative and mount the RX somewhere cooler.

 

Thanks for the answer tigger, i also have no oil residue with the rx can but also i am not catching to much oil either but my rx can is mounted on the back of the engine bay where the alarm hood switch goes. Now, i dont know if my rx can stays cooler than yours because as you know mine is closer to the hood and maybe the air that comes from the scoop can cooler a bit the occ but this is just a theory.
Are you going to make a full review of the rx occ just like you did with the clutch?