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#8: 11-14-2012, 06:45 PM
Aracheon's Avatar
Title: Clutch Artist
Rank: Donating Member
Location: Denver...ish.
Posts: 274
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I'm running the dual Moroso setup... one can for the heads, one can for the crankcase.

The head can hasn't caught more than a drop, but I haven't taken my car to the track yet, either.

The crankcase can I've had to empty several times in just a few thousand miles.

Worth it? Depends on how you drive, how much oil vapor makes out of the crankcase breather (YMMV), and how much/little you care about your engine ingesting that stuff. The inside of the TMIC on my 09 STi after 60,000mi was nasty as hell... but I also drove the hell out of that car. Commuting, trackdays, hauling motorcycles, ice racing, etc.

There's a 100+ page thread on IWSTI about AOSs/catch cans if you REALLY want to hear the pros and cons...