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Old 12-19-2002, 12:45 AM   #1
SJwrx
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Default Is a catch-can neccessary?

I am wondering is a properly tuned WRX needs a Catch can? Is this just a gimic that will never really be used and is just a temporary fad?

Rich
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Old 12-19-2002, 01:20 AM   #2
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It may not be necessary, but it can become highly desireable as one bumps up the boost on a modded engine. Blow-by increases and more ventilation is needed from the crankcase spaces. That means more suspended oil vapor is moving through the crankcase valve, some of which is re-circulated upstream of the turbo. Oil condensation increases on the compressor side of the turbo and the IC. The catch can traps much of this oil vapor before it deposits on turbos blades, and other unwanted areas of the intake system.
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Old 12-19-2002, 01:22 AM   #3
codean
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Unlike some other mods, catch cans do work! I plan on getting one sometime in the future.
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Old 12-19-2002, 01:31 AM   #4
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Yes, indeed, they do work. My baffled AVO catch can has made a real reduction (zero) in oil deposits, particularly in the intake hose just upstream from the turbo.
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Old 12-19-2002, 01:40 AM   #5
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Thumbs up

I am going to vouch for the AVO too - awesome product - just need to get all the other parts lined up and on it goes :-)

Not over sized, proper "catch" design - top notch stuff.
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Old 12-19-2002, 02:09 AM   #6
SJwrx
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The AVO sounds good but looks cheap (NOT THE PRICE THOUGH ) $190... damn. Is it worth $190?

How modded is a "modded" engine?

Rich
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Old 12-19-2002, 02:18 AM   #7
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its worth it because it works - but i can take a greddy catch can and put steel wool in it as baffling and it would work just as well. or i could just take a pos tin can and do the same thing.

"modded" meaning new turbo, FMIC, injectors...
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Old 12-19-2002, 04:23 AM   #8
SJwrx
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I'll probably get one as "preventative maintanance", but I can see my car is just a few things short of a "modded" car.

Rich
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Old 12-19-2002, 04:43 AM   #9
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Put it this way - there is always a fine mist of oil gradualy coating our ICs, so having a catch can can help maintain the preformance of the IC, and therefore your car. It does not have to be heavily modded to get oil in the IC.

Less noticeable in the winter, but in summer it would be nice to know that your charge air is being cooled a bit...

IMHO and all that.
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Old 12-19-2002, 10:28 AM   #10
Need4Boost
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I guess you could call it cheap insurance.
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