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Old 05-28-2016, 12:11 PM   #3482
dj2020
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Quote:
Originally Posted by canyons View Post
Greetings gents,



Does anyone see a reason I can't pull the half-inch line vac going from the CCV to the air intake and route that line to a catch can With the outbound port of the cc going to a small breather filter?



Aside from venting to atmosphere, is there any mechanical reason this wouldn't work? Seems to me this would eliminate no chance of any vapors or aerosolized oil getting drawn back into the intake, no?



Thanks,



Canyon.


That's what I plan on doing as well, except I'm going to do it without a catch can. I'm going to fit a breather filter directly on the 1/2" tubing coming from the CCV. Over time, my MAF has been slowly fouling and causing fuel trims to go negative. It finally threw a rich code one year post Jrsc install. When running my finger inside the intake tubing and throttle body, as suggested by @CSG Mike, there is a thin film of oil. It's my understanding that under vacuum, the CCV will pull air into the crankcase but under boost, air and oil will exit out the CCV. I'm hoping the breather filter over the CCV will fit the bill.

[ame="http://www.amazon.com/62-1600RD-Vent-Air-Filter/dp/B009774GCA?ie=UTF8&psc=1&redirect=true&ref_=oh_aui _detailpage_o00_s00"]Amazon.com: K&N 62-1600RD Vent Air Filter: Automotive[/ame]


I already have a Mishimoto catch can on the PCV side with a check valve so that the can never sees boost but intake manifold vacuum still pulls vapors from the PCV (while air enters through the CCV breather).
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