Livernois Motorsports SHO catch can release!

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Jeff2017

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Flip the bracket over. That will give you another 1 inch of clearance at the bottom.
 

SilverSH0

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I have an educated guess, I did research on this an asked the same questions your asking but I never really got a clear understanding, however I did glean this much.
- There are few types out there some are expensive, some not as much but it boils down to this, the systems with three hoses I believe taps into a vacuum somewhere to help pull the vapors/oil/water out by providing negative pressure on the system. On the surface this should be a better however there as been some concern that removing too much pressure from the system could cause issues with the motor, I believe the three hose systems pull from both sides of the engine which I think is referred to as "wet an dry" side. The two hose system is super simple, the can goes between the PCV valve and where it vents back into the intake. All it does is create a low spot for the water and oil to collect oil and water that is normally pushed through the intake an burned off. I is only on the wet side which is really the only side that needs to be addressed. I have the two hose one from JTL, I have only had it a short time so I cant really give much feedback but it does seem to be working.
- The one thing you said is you thought the two hose system would not work under boost, but it would seem to me that is where the two hose system would work the best as it works when there is crankcase pressure on the motor which is basically why you need a catch can in the first place.
Anyway that is my guess BUT I COULD BE WRONG, I hope it helps.
C/
I did quite a bit of research in the past on the catch can systems and that's not how I found the 3 hose systems hooked up. The PCV system has a clean side and a dirty side. The dirty side is off the PCV valve (a check valve) and into the intake. The clean side is on the other valve cover and goes into the plastic intake hose before the turbo. This air is always at atmospheric pressure and is clean since it's after the air filter.

On the stock system there are two modes of operation; boost and no boost.

Under no boost the intake manifold is under vacuum and the crankcase is under pressure. The vacuum in the intake manifold causes oil/gas/air mixture to be drawn out the dirty side (through the PCV) and into the intake manifold. But if it's pulling air from the crankcase, clean air has to replace that or it'll create a vacuum. So clean air is pulled from the plastic intake tubing and into the engine.

Under boost the intake manifold is under a lot of pressure, maybe 10 PSI or whatever depending on driving conditions. In order for the crankcase to vent into the intake manifold the crank pressure would have to exceed the boost and you don't want your crank pressure that high. So while under boost the PCV valve is closed because the intake manifold is higher pressure than the crank. Now remember the clean side port that connects to the plastic intake tubing at atmospheric pressure? All the crank pressure will blow out the clean side and into the turbos and CAC. So under boost the system is blowing oil/gas/air out the clean side, into the intake tubing, through the turbo, through the CAC, and into the engine.

What the three hose systems do is once hose connects between the PCV valve and the intake manifold. The other hose connects between the plastic intake tube and the valve cover (on the clean side). The third hose connects the can to the intake manifold. This way it doesn't matter if the system is under vacuum or boost, it's passing through the catch can.

On this system it's not operating when the vehicle is under boost. You might think that's not a big deal because it's a small percentage of time and most driving is under vacuum. However, go look at all the post on the forum about oil in the CAC and people removing it. There's only one way for oil to get to the CAC and that's because that pressure is venting out the clean side under boost. So it's clearly an issue on these cars. But for some reason (maybe Livernois can clarify) they aren't addressing this problem.
 

Sgtmeatsauce1

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Yea what SilverSho said, that is why I invested in the orginal McNulty RXP oil separator system(giant 15 page post on other forum), I am VERY happy with the system. It is a giant can that redides under bumper on the high pressure area drivers sidewheel well area away from the engine heat where it can condense better and get more crap, and get more crap it does!
 

SM105K

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Yea what SilverSho said, that is why I invested in the orginal McNulty RXP oil separator system(giant 15 page post on other forum), I am VERY happy with the system. It is a giant can that redides under bumper on the high pressure area drivers sidewheel well area away from the engine heat where it can condense better and get more crap, and get more crap it does!

How long do go between oil changes, and do you empty the can every time when you change the oil?
 

SHOdded

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I believe Ford added a sensor to the cleanside pcv line in the 2015MY to help address the oil issue.
 

SHOinVa

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I did quite a bit of research in the past on the catch can systems and that's not how I found the 3 hose systems hooked up.
So I have NO DOUBT you are correct, however I know one of the Catch Cans I was looking at had a hose going to the turbos for some reason, at lest that's how I read the diagram (I could be wrong). I repeatedly asked what was the difference in cans and which can was best and never got a clear answer from anyone including the guys from JTL. Based on price and how easy it was to install I went with the one from JTL. I have to be honest I'm not that handy so I would have had to pay someone to install the three hose system and it was more then twice as much. The one I have works, from what you say the others work better but mine is a huge improvement over nothing so I'm good and can spend the money on something else. BUT Thanks for clearing things up, I really didn't have a good understanding.
C/
 

Johnbigdog

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I believe Ford added a sensor to the cleanside pcv line in the 2015MY to help address the oil issue.

Nope, the crankcase pressure sensor just makes sure the pcv system is connected from my understanding. Nothing to due with oil consumption.

And yes our pcv system works backwards under boost. This is true for all of Ford's EcoBoosts from my understanding.
 

sanman

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So what is everyone verdict? Livernois Catch Can or JLT they both look identical JLT is less then half the price of livernois... is one better then the other? Livernois stated they had 1/2 inch thick aluminum bracket doesn't look like that. Looks like the same thickness as JLT just different placement Not Sure which one to get?
 

Jeff2017

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So what is everyone verdict? Livernois Catch Can or JLT they both look identical JLT is less then half the price of livernois... is one better then the other? Livernois stated they had 1/2 inch thick aluminum bracket doesn't look like that. Looks like the same thickness as JLT just different placement Not Sure which one to get?
JLT seems like the logical choice. Being 1/2 the price but being functionally equivalent. Anyway, if I were get it, I would probably pick the JLT.
 
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