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Old 06-25-2010, 06:34 PM   #1
IA Performance
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OMGHi2U Crawford Air Oil Separator Install Photos Within 2008+ WRX and LGT applications

A few months ago we snapped several photos while installing a Crawford AOS in a 2008 WRX. The photos may be helpful for when you install your own unit regardless of model type or year since this shows where the lines run. They do not show a full Step-By-Step process of the install, but rather the key points are shown.

Feedback received back from the customer was:
- Zero oil consumption
- Less 'Gas' smell from the catless exhaust

Note: The shown canister is the v1, which has since been replaced by the v2 canister with optional Coolant heater tube. With the release of their new v2 canister Crawford has authorized a Group Buy for those looking to save a few $$$. Details are found here (click the photo). More importantly, back to the install




Start by removing the TMIC
If you can't do this step, then you are guaranteed to fail the AOS install.

Crank Case Breather
The crank case breather rubber hose has a junction connector on it that needs to be removed.
image 2


In this image we have removed the rubber hose from the car to show the connector that needs to be removed. It is not necessary to remove the rubber hose to accomplish this step. The Crawford supplied 'Y' connector will the fit into this rubber hose (where the previously removed plastic connector was)


The Crank Case breather is finally exposed. This will give you an idea of where the crank case breather is in relation to the turbo. Again, it is not necessary to remove the rubber hose to expose the metal nipple.


Y pipe installed
This step was amended after the photo was taken. The 'Y' connector will fit back into the factory 'S' shaped crank case breather hose (shown in the above image #2), although this image shows a different hose in place of the 'S' hose. Please disregard the discrepancy.


Electrical Plug from PCV
We pulled the white plastic part from the turbo inlet hose supply. This made it easy to plug the hole with a silver cap, as seen below. Reconnect the electrical connector to avoid a CEL. Alternatively, you may jump a wire from one side to the other since this 'sensor' only needs to see continuity. We opted to plug it back in and then zip tie it neatly under the intake manifold where it was hidden.


Cap the holes
1) You need to cap off the 2 open lines from where the Breather hose / PCV was removed. The first one is left over from where the White Electrical connector used to reside in the previous step.


2) The second open hose used to house the silver nipple found on the PCV. At the time of install/photos (late night to say the least) we did not have a 2nd plug, which is now supplied in the kits. In our bind, a bolt wrapped in teflon tape was used. This bolt has been removed since the photo was taken and plugged with the correct metal plug.


Stephen@iaperformance.com
520-882-2821
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Last edited by IA Performance; 02-17-2014 at 06:29 PM.
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Old 06-25-2010, 06:34 PM   #2
IA Performance
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Head Breather Tube
This Tube is found bolted to the backside (faces firewall) of the intake manifold. It is no longer needed after the install of this kit. Please remove and set aside.


Run new hose from each head breather (in replacement of the plastic tube taken off in the photo above


'T' Connector just above turbo on 1/2 breather tube


Breather Routing Completed


Wiring Harness Relocation
Remove the factory wiring harness from the passenger side strut tower. This will expose the mounting holes for the AOS TMIC unit. Reroute the harness over the AOS hoses and UNDER the P/S hoses to the frame rail. Secure it there via zip ties (around brake lines/tubes/etc)


Installed
This will show the routing of each hose as well as denotes what they are


Compteted with TMIC back in place


Stephen@iaperformance.com
520-882-2821

Last edited by IA Performance; 06-25-2010 at 07:10 PM.
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Old 07-01-2010, 05:57 PM   #3
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Nice!
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Old 07-01-2010, 08:53 PM   #4
VwFreak996
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Where the AOS is installed, does it interfere with the install of a front strut bar?
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Old 07-18-2010, 06:12 PM   #5
IA Performance
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VwFreak996- There is some room left for a front strut tower bar. On previous generation Imprezas we have successfully mounted several strut tower bars. With some you will need to add washers/spacers between the bar's base and the Top Hat, this will raise the bar height. In some cases we have drilled the AOS mounting holes just a pinch larger to allow it to sit lower. You could say we deal with it on a case by case basis The great thing about the AOS kit is that it actually serves a function past appearance, it serves as a means to protect your motor's health. We, as with quite a few race teams find the front strut bars to be a visual piece rather than a functional one since the firewall is so close and body flex is next to none in that region.

The following photos are on a 2006 STi, different chassis, but it will give the idea. This unit bolted right on without issue.




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Old 07-18-2010, 07:10 PM   #6
Gabriel~
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^^ Nice APS TMIC in that picture. BEAUTIFUL!
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Old 07-18-2010, 07:49 PM   #7
IA Performance
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I agree, it is a nice looking and fitting piece. It is too bad the APS TMIC has been discontinued Process West has some pretty good looking options out there now.

Stephen
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Old 07-18-2010, 09:34 PM   #8
Dragonfueled
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So does this filter the pcv and the breathers? Pretty cool setup.
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Old 07-18-2010, 11:09 PM   #9
IA Performance
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Dragonfueled- The concept behind the AOS kit is to take oil from the PCV and breathers and put it back in the crank case. This is perfect for those people running aftermarket motors with forged pistons as well as stock cars. The goal is to keep the oil in the motor

Stephen
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Old 07-19-2010, 04:30 AM   #10
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What happens if you keep the PCV there and run the kit like that?
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Old 07-19-2010, 09:54 AM   #11
IA Performance
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Carlitri-boost- If you keep the factory PCV on top of the crank case then there is now way for the system to drain oil back in to your engine block. Keeping the oil in the motor is the goal with the AOS

Stephen
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Old 02-22-2011, 05:31 PM   #12
DutchOven
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Thanks for the write up. Wish the group buy was still going on.
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Old 02-23-2011, 12:26 AM   #13
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we wish it was still going on too If you desire an AOS kit please contact me and I'll see if we can help to offset costs of shipping or similar.

Stephen
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Old 01-02-2014, 10:04 AM   #14
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Updated with more install photos.

Stephen
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Old 01-13-2014, 02:07 PM   #15
wakeupandbord
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I Just installed the AOS v2 in a cold garage yesterday for at least 3 hours. Wish I would have seen these helpful pictures BEFORE I installed it, I should say while my buddy and his mechanical genius for a father installed it.
Luckily the oracle was there to help when we got stuck on the vague Crawford directions (directions were for a FMIC WRX or legacy, so it was difficult to follow steps when the pictures don't line up with what were doing)


Thanks Stephen, just wish I saw this before lol

PS> These instructions for the AOS V1 would have been more beneficial than the actual crawford AOS V2 directions.
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Old 01-14-2014, 07:48 PM   #16
IA Performance
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Wakeupandbord - Ah man, that's too bad on the timing part Hopefully a few more people will find this link before installing their AOS kit.

Stephen@iaperformance.com
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Old 02-17-2014, 05:16 PM   #17
reaper702
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At this step, we do not reconnect the other electrical plug where the y splitter is?

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Old 02-17-2014, 05:35 PM   #18
trev762
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Quote:
Originally Posted by reaper702 View Post
At this step, we do not reconnect the other electrical plug where the y splitter is?
Ya think lol:/.
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Old 02-17-2014, 05:46 PM   #19
IA Performance
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reaper702 - I'm trying to recall what we ended up doing with this particular car. I believe there was enough room for the plug to still clip into place. That, or we relocated the plug, assuming it is not the air pump solenoid plug since that plug is in a fixed location. I wish I had better info, but it's been a few years since this particular post was made.
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Old 02-17-2014, 05:56 PM   #20
trev762
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Quote:
Originally Posted by IA Performance View Post
reaper702 - I'm trying to recall what we ended up doing with this particular car. I believe there was enough room for the plug to still clip into place. That, or we relocated the plug, assuming it is not the air pump solenoid plug since that plug is in a fixed location. I wish I had better info, but it's been a few years since this particular post was made.
Yes the plug should still clip in but depends when the harness was wrapped by in the factory it's just of matter of due diligence when doing the install.
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Old 02-17-2014, 06:02 PM   #21
reaper702
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Thanks, the instructions make no mention of this and it looked like the y splitter blocked it.
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Old 02-17-2014, 06:18 PM   #22
IA Performance
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reaper702- It looks like we have an error in our instructions in this forum post. For our particular car we ditched this hose, but for everyone else, you will want to keep it. The Y connector will go in the end of it where the current plastic adapter it shown. The offset shape will avoid hitting the plug (like our photo shows).



More instructions may be found here:
http://www.crawfordperformance.com/w..._Version_2.pdf

Stephen
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Old 02-17-2014, 07:47 PM   #23
reaper702
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That makes much more sense, thanks for clarifying that.
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Old 03-10-2014, 11:23 AM   #24
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