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Old 04-28-2012, 12:58 AM   #1
carlck19
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1995 Impreza L wag
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Default grimmspeed aos ej20g

Hey guys im looking into either an aos or catchcan setup on my ej20g, I was wondering if anyone could point me in the right direction in terms of which lines would go where on an ej20g (photo or something)
-Alex
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Old 04-28-2012, 01:01 AM   #2
carlck19
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I mean for the grimmspeed aos, that is.
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Old 04-28-2012, 04:23 PM   #3
TommyAtomic
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Pics are nice but unnecessary. The EJ20G has 2 ports on the turbo inlet elbow. Redirect both of the lines from those port into the AOS. Block off one of the ports (I would use a brass plug and a hose clamp) on the elbow and connect the return line from the AOS into the remaining port on the elbow.
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Old 04-28-2012, 08:44 PM   #4
sizzflair
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Check out my car. I have a aos on mine that's from sgmotorsports. I'm on my phone so that's all I can give you right now lol.
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Old 04-30-2012, 01:19 AM   #5
TommyAtomic
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I'm also running an AOS. A Morroso not the grimmspeed. You just need to capture the blowby. The blowby is coming from the feeds from the PCV and the cam vents so you need to run those through the AOS before routing them to the intake.
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Old 04-30-2012, 05:54 PM   #6
carlck19
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thanks for info guys really appreeshed.
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Old 05-05-2012, 03:33 PM   #7
carlck19
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installed grimmspeed aos and it works perfectly!
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Old 02-19-2013, 10:05 PM   #8
Tizzle
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EDIT: I figured out how install on my car also, if anyone is looking for more detailed instructions, feel free to PM me

Last edited by Tizzle; 08-04-2013 at 04:32 PM.
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Old 02-20-2013, 12:07 AM   #9
fxt05
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I hate to be the one to repost bad info, so feel free to bash me. I would not use a gms aos because it takes all of the oil you want to separate and dumps it back into your oil system. I think its better to separate the excess oil and dump it in an access can to get rid of.
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Old 02-20-2013, 02:00 AM   #10
Tizzle
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88 RX, 87 RX, 07 FXT

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I appreciate your comment, I have considered that, and I am aware of the pros and cons of AOS vs catch cans
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