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Underbody braces, turbos and more!

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PostPosted: Sun Sep 09, 2007 8:33 am 
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Location: Cork
Image Is this small filter any good to apply? does it add much performance? i believe its called breathers. the little air filter thing behind the oil cap

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PostPosted: Sun Sep 09, 2007 9:38 am 
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I dont beleive it really adds any performance. its just a cheap and dirty way to let positive crank case pressure out. Also, in some places you can get in trouble for doing that. its concidered modifying emissions. normally your engine is suposed to take in and burn the gases inside the crank case, this just vents it to the atmosphere. On an older, warn engine with alot of blowby, alot more crap will be forced into the intake and burned up in the engine than on a nice tight engine. I myself prefer an air tight catch can that catches any sludge (its sort of a milky gas/oil mix) that would make it through the stock PCV system but a ctach can still allows the engine to breath in the fumes and thus, shouldnt be illegal.

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PostPosted: Sun Sep 09, 2007 5:02 pm 
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greg nice one for the info. i herd they were shit but i needed info about them. :wink:

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PostPosted: Sun Sep 23, 2007 4:48 pm 
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Here's our big thread on breathers: http://www.teamswift.net/viewtopic.php?t=10697

My comments start on page 2

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PostPosted: Mon Sep 24, 2007 1:05 pm 
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alrite so we'll end this topic by saying those brether filters are a load of B*!";&KS

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PostPosted: Sun Oct 14, 2007 10:16 am 
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yes they are an oil smell as well as oil all over everything sucks,if your car has blowby like mines.

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PostPosted: Mon Oct 15, 2007 9:25 am 
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Joined: Mon Aug 06, 2007 11:51 am
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Location: Australia
I had one of these "K&N" oil breathers on my GTi.

In Australia, they are illegal. I was pulled over by the local police for a random breath test and defect check. I was fined $70 for an uncovered "pod filter" and $70 for the "oil breather filter".


Nick


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PostPosted: Mon Oct 15, 2007 3:55 pm 
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Had a call from an SRT4 owner running one without a catch can. As the filter wets out it allows excess blowby to accumulate in the crankcase thereby pressurizing it. His oil light was going on becaue the excess atmosphere was increasing air entrainment.

That said, if you use it as the filtered inlet for a metered valve for a depressed atmosphere crankcase you can add some hp.

That would probably earn at least two tickets in Australia; three in California. :wink:


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