How to install an Air Oil Separator (IAG AOS Street Series) in a 2020 STI | COMPLETE GUIDE |
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- Опубликовано: 12 июл 2024
- See how to install an Air Oil Separator (IAG Street Series) in a 2015+ STI. This is a step by step guide so, no more excuses! Check out this separate video • How An Air Oil Separat... in which I go over the theory of how it works, what all the hoses do, how it compares to a catch can, and why it might be necessary in your car.
Notable Sections:
Intro 00:00
Video Start/Removing Intercooler 00:59
Removing Hoses 3:11
Setting Up New Hoses 5:34
Moving Engine Wiring Harness 9:29
Setting Up AOS Hoses 11:55
Installing AOS in Engine Bay 14:08
Connecting the Hoses 16:11
Reinstalling the Intercooler 27:01
For this Install, these are the tools you will need:
IAG AOS (for STI) →→ amzn.to/2T3qZwZ or WRX amzn.to/2Wtc9lJ
Hose Pinch Pliers →→ amzn.to/3cs4Pwc
Hose Cutters →→ amzn.to/2Z1iWV5
Zip Tie Fastening Tool →→ amzn.to/2YYRJmb
Scissors
Flathead Screwdriver
Needlenose Pliers
Sockets: 10mm, 12mm Wrenches: 7/8”, 11/16”, 8mm, 10mm
Allen Wrench Set
Electrical Tape (HIGH QUALITY)
Torque Wrenches (2.2 ft-lb, 11.8ft-lb)
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Thanks for Watching!
#STI #AOS #WRX 
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You seriously deserve an award for this video. Not just for the amazing production quality, but also for the massive benefit that this video provides the WRX/STI community. So good dude!
I second this comment...Honestly the best AOS install video on youtube!
This is the cleanest tutorial I’ve seen
I am a ASE Master Tech / L1, L2 certified, with over 30 years of experience. This is an excellent video!!!! It should be known this is the V2 AOS. The newest V3 is similar but much better. V3 has banjo fittings for the coolant lines and spring clamps instead of zip ties for all the connections. There are many other differences. The full color detailed, step by step installation can be downloaded from the IAG website. I would still suggest watching this video to get a good general idea of what the process will be like. Again, EXCELLENT JOB!!
Just finished the install of this in my 2020 wrx sti and this video helped tremendously. It took me about 10 - 15 hours to complete over the course of 2 weekend days and 2 weekdays and I have about 0 car modding experience. I watched this video about 10 times and cross referenced it with the IAG AOS manual. Here's some observations that may help others:
- When removing battery (easier access to driver side valve breather line), there's a plastic cap on the battery mount bracket. You can twist this off with a socket wrench
- Lube up each hose/connection you can. Just like B&S says. Getting the intercooler on without oil is very, very difficult
- Once tape is removed from the main electrical harness, it is still tough to move because of the kink. It will move.
- Disconnecting some of the sensors on the breather lines was surprisingly difficult at first. You need to wiggle as you pull out.
- You will bend some fins on the intercooler. Just accept it.
- I have huge hands and did not need to remove anything with the air intake when connecting the aos passenger side valve breather line. It will hit the nipple at an angle, but with lube will slide right on and sit flush.
- When working with zipties in tight spaces, make sure to align it so you can use needlenose pliers to tighten one click at a time.
- I used all the tools B&S recommended except the zip tie cutter.
How was it putting the intercooler back in? I worked on it 10 hours yesterday got everything done except putting back the intercooler elbow coupler it refuses to go in completely and i think its because the hose thats under doesn’t allow it to. Any suggestions?
Tweezers will straighten bent fins or cut and tape a piece of cardboard to cover them while installing.
Just want to thank you for the work you put into making these well detailed videos. I greatly appreciate it.
Excellent video! This is the best IAG install video out there. Still looks like a daunting install, but you made it look possible for a do it yourselfer. Thanks. Still waiting on my 2020 STI, but this is a mod I want to do ASAP.
This is so informative that I do t even feel like doing it. Instead i just did a simple oil catch set up and called it a day. It ain’t the cleanest but it works for what I need.
Awesome video. Best I've seen on AOS installation! You just gain yourself a new subscriber, so glad I found your channel.
Really appreciate this video and others. I was able to do a head unit & sub install with no experience because of you! Thanks man
Wow what a very good step by step informative video!! Lots of patience to install film and edit! Really good channel! Thank you!!
Great guide as always. I now have the confidence to do the install myself.
Great video!!! Been a subscriber for a while. I have had my AOS sitting in a box in my garage for over a year and I finally attempted to install it. Your video came in clutch and was a huge help. Great verbal instructions and camera angles. You didn’t go too fast either. Thank you!
By far the BEST video on youtube for this install..completed mine today by watching this video! Thank you!
Great video. I did this already on my 18 STI a few months back but this is hands down the best AOS video install.
Sick details. You deserve an award.
This is the best step by step installation guide ever! you deserve a like!
This is hands down the best install video for anything I've ever seen. Thank you Boost & Shutter
Thank you so much for this video man, super detailed! I will be doing this install sometime this week. Definitely a new subscriber 👍🏽
I've watched a few of these trying to learn how to do it and yous is BY FAR the most comprehensive and easy to follow tutorial! Thanks so much!
Amazing tutorial so clear and detailed. Thank you so much I am returning the Cusco dual set up I was gonna do and instead get this IAG AOS. Looks much nicer
Thank you so much! I’m so glad i found your channel!! I will be watching and re-watching this and the overview video to prepare for my own IAG AOS installation!
Glad it was helpful! Just be mindful that apparently V3 is a bit different.
Props man! Because of this perfectly step by step installation video. I was able to successfully install my AOS without any hiccups! Thank you so much!
This is a sick video. I used it today to help me install my aos after watching two other install videos. This was definitely the most straight forward of any video i have seen. Thanks for the upload 👍
Great video my man! I love the attention to detail.
Thank you, your video tutorials are highly informative!!
This is way better than the other videos online!
Thanks, great video! I'm definitely thinking of tackling this soon. A little gunshy, but it looks like take your time, you're good. Thanks again! (2017 STI)
Excellent video!! Couldn’t have been more clear instructions!
Thanks for the high quality clip! Instruction is so clear, camera is steady, and view angles are excellent. Subscribed. Keep up the great work!!
Thank you and welcome!
Really love the detail and nuance of your install video. I'm trying to figure out how to adapt this AOS to my N54 335i.
This is excellent quality of video, explanation, and length of time of video. IAG should pay you for this video, I don't think any brand of anything aftermarket for an 2020 STI would of spent the time and effort as you did to show how to do it and explain it in such depth with great instruction. Thank you for doing this, it will surely help me when I install or have it installed on my 2020 STI.
Super clean tutorial. Thumbs up and subbed! I look forward to more videos!
Just did my aos on my gfs 11 sti. Your step by step helped me a lot bro! Thanks for this and 5/5 video bro! Got my subscription!
I think this is the most detailed iag aos install video I’ve watched. Kudos to you bro! Keep it up!
No problem 😉! I also checked your other videos,i saw you also do have an ascent, im also looking to get one as the family vehicle, hows the ascent despite of the issues with the cvt tranny?
Great video brother easy to follow! 🔥 🔥
Thanks for uploading. I'm not at all a mechanic but I was able to perform the install on my 13' STI
Your install video helped me so much. Iag instructions don’t even come close to your video. Thank you so much
This is the best video ever on installing a aos on RUclips. Thank you for all the details. Just put my aos on a 18 STI 50th anniversary...
Definitely it is worth the time to comment twice. Make more videos like this your really good at it
Awesome video bro. This was definitely helpful
Thank you for the video. This is going to be extremely helpful. Subbed!
Thanks, that was an awesome tutorial!
Thank you for what you do man!
Thank you my friend..you gotta head on your shoulders..👍 well done!
Just followed this video. I did it!! I installed the aos on my 2017 sti. Thank you so much Dude. Amazing video.
Glad it helped! Thanks for taking the time to comment.
Awesome video!
You’re the man great content ! 😎👍🏼
best tutorial i’ve ever seen
Crystal Clear 💯💯💯
bout to install mine using this video and confident that i can pull it through very detail man thanks
Glad I could help
Fantastic video, brother - thanks!!! I was going to have mine installed by a local Subi shop, but it was going to cost me $676 for 4 hours of install time. Figured I could better use money like that on more parts. So, I bit the bullet and did the installation with my son. I would never have made it through the drain hose part without coming back to the video and seeing how you used the factory hoes/clamps. After 45 minutes of trying with the new host/clamps, I was able to get the stock hose/clamps on with no issue and keep moving on. Fantastic explanation throughout the video! I installed the V3, so I split my time between your video and IAG's and had it installed in 3 1/2 hours (and that's including all that time spent on that drain hose). All I can say is thanks!!! Your videos are excellent.
Great video. I just bought a 2020 STi and I plan on doing this and possibly adding a Grimmspeed TMIC at the same time.
Your tutorial was execellent.
Thanks, great video
This is a great video fornthose who like to modify and tinker with their cars. This is why I watch you and all others in the subie community. I really appreciate the attention to detail and other maintenance techniques that I have witnessed here. I like keeping my car stock. I love my 2017 base model WRX. I out a vortex generator and OEM foglights on mine. I let Frank's irvine subaru do it in irvine ca. Stay safe brother and I'm catching up on all of your older videos now. Happy holidays to you and your family Sir.
The last hoes on oas what sensor does that connects to . I have one end to the aos but the other end I can't see find where it goes .. thank you
Great video I've got a 2019 STI & going with a AOS so far I got 14,000 miles.
Hands down the best install video ever…. I’ve been on the fence about installing this myself but your video gave me the confidence to try it on my own. Props to you for taking the time to create this tutorial. This company should pay you for this…
thanks for all your help, you made my install a breeze
Great video!
Great video. I followed it step by step installing iag aos on my 2021 STI today and after couple hours aos was installed. Even reinstallation of TMIC was a breeze. Just "sweat" turbo outlet and manifold inlet with engine oil and it slips in easily. Thanks for directions. Also installed cylinder 4 cooling mod following another video and again. Walk in the park
7 months, thats how long my AOS has been sitting in my garage. Last night I spent more than 6 hours doing this install. But it saved me hundreds in labor at a shop. It helped me solve major crank case pressure issues that put tones of oil in my intercooler/turbo but after driving this morning a HUGE difference in my fine knock and DAM readings. The PDFs are to ambiguous, this guide was priceless, THANK YOU!
Glad it was useful to you. Thanks for watching!
Fantastic video, I need to remove my AOS and return it to stock for CAL smog.
very detailed video here
Member when he had a WRX? I member xD gone but never forgotten lol amazing install video as usual!
As I look into the IAG V3 install guide, IAG kept both side short hose connected to breather ports (passenger & driver) with the white connectors. You wouldn't have to tape up the connectors on both sides as well. Just something that I noticed in the new guidebook.
This comment should go to the top being they no longer sell v2. My v3 arrived today and can't wait to install this video is great for installing v2 (I guess if you buy a used one) but iag has an awesome install of the v3!
amazing video....good lord that is alot work!!!!......
It sure is! Thanks
I installed the V3 IAG AOS in my 2018 WRX. And it's the best mod for the money I have done . These engines are very temperamental. And anything that can keep em running and in good shape is a good thing. 👍
Fantastic level of detail! Thank you so much for doing this! I've had my IAG sitting in it's box for a few months now and part of the reason is that I was a little intimidated, and the tutorials online were not the best for 2018+ Sti's. As far as your tutorial-- I couldn't have asked for anything more! Great camera work, lighting, and detailed commentary. Subbed!
agreed
Have you done it yet? Do you have the version 3?
@@michaelhernandez1398 I haven’t yet...it’s an install I plan to do along with a few others that require removal of the intercooler so I’ve been putting it off due to la k of time. Also, I do not have V3, sorry!
good good job ,thank you very much
This is a really good detailed video. I've watched it about 30 times lol. The only thing I noticed is that in IAG's instructions they don't mention anything about removing the jumpers and reinstalling them back and taping them off. They also keep both passenger and driver side breather hoses on instead of removing them and now I'm confused lol.
I would love to see you do a motor mount install video! It’s one of the more intimidating mods for me and I plan to try and do them at the same time as my AOS. If you don’t plan to do them I understand, just thought I’d ask because your video installs are the best!
Unfortunately that's not something I foresee doing anytime soon.
@@akqjtn No worries! I know it's not for everyone. Thanks for your reply and keep up the great work!
The amount of support in the comments for this daunting part is astonishing. I had bought a set of wheels, a Cobb big sf intake and ets extreme catback and this AOS still took me longer to put on than all of those parts combined.
I don't even have a Subby and I enjoyed this video.
@@akqjtn I actually did have a motivation. They don't market the product to the Mazdaspeed crowd. Too small of a market I guess. But, Mazdaspeeds can use that also and I plan to get one and I figured I would watch your video just for a basic idea even though of course all the locations will be different. Mazdaspeeders usually use catch cans but I want an AOS. I fact, I have an AOS, the Crawford. But its nowhere near as good and I've outgrown it. I got the IEG V3 on order and I might need to change some of the hoses/brackets since I bought the WRK kit. I thought it was really cool how they were able to design a cable relocation bracket such that it completely looks like it could have come from the factory that way. Lucky that the cable has available slack to make that happen.
This is So awesome. I love this channel.
Here another easy request :)
May you make a video on how to boost leak test the sti.
Nice job! Didn't even get your hands dirty! 🤣
MVP!
Grab the octopus 😂😂😂You made this install so easy though, thank you brother
Glad I could help
Great video. The only bad part (and definitely 0% your fault) was that I just bought an AOS and it was the new style AOS, so certain hoses were installed on it differently and I had to take a couple guesses at first.
I just got one too, follow the PDF on the install.
I am currently installing a cobb aos and its the exact same thing as the one you just installed. It just says cobb and its black. You have the best video instructions i have seen! I tried using cobbs instructions and theyre garbage
You have great instructional videos! I've seen some channels show how to change the manual transmission oil, but they don't explain why you should do it early or explain the benefits of switching to a non-OEM brand. Is that something you would consider doing?
Well done on this video!
One thing I hated about the video is the amount of ZIP ties. Please compression or worm gears are so much easier in the future.
This video is fucking awesome, excuse the French but bless ya man, such a major help for when install on 21 STI.👏🏼👏🏼
Thanks just keep in mind the V3 is a new version that apparently doesn't require every step in this guide.
Very detailed video. Nice 👍 work!
Where are you located I want to take my car to you my friend really detailed video well done 👍🏻
Heyoo. Thanks for the amazing content. I followed alot of your sound deadening videos and will be following this one soon.
Question about the AOS. How long does 1 last? Does it need to be replaced over time? And do we need to do any maintenance on them like Cleaning tubes or pipes?
Great video man. I wanted to ask If it is possible to use the lowest setting when securing the AOS to the Chassis? I don’t want to have to remove my strut tower bar.
Any info would be great!
Liked & Subscribed👍🏽
Hey my man. Love your channel amazing advice. So I recently installed the IAG AOS V3 Street series on my 2020 sti. After everything was all set and I double checked all my lines I started the car only to find a vacuum leak. I cannot find it for the life of me. Any suggestions on places it would be?
Hey man thank you. This video made life so much easier. Just wrapped up the install but the port where it goes back into the turbo inlet closes to the turbo not sure where it goes. Running a killer b inlet doesn’t have that port anymore. Any idea where it could go? Appreciate it
Nice ride and thanks for the vid. Any issues with the hoses sitting on/close to the intercooler?
Great content brother, how has your bock breather y fitting holding up since you use install it?
I’m gonna do it your way because is a pita to do it the original way (4hrs spent trying to push down on it).
Does this apply to a 2004 STi as well? This is an excellent video. I'm wanting to do an AOS on my 04 STi.
I've watched this video literally over 30 in preparation for my install. Thank you! With the new V3 AOS the instructions seem to be slightly different and I realized after I already followed your steps. Do you think everything should work the same? Thank you
Any issue's once you put the battery connection back on? Thanks for the video!
If I have an aftermarket downpipe and heat shield, do you recommend installing those first before installing the AOS?
I put a 90 degree glass filled plastic fitting off of my coolant reservoir and aimed it downward to avoid the kink and it no longer rubs the intercooler.
Hey B&S I've been using you're guide to do an aos install on my 2020 sti. Very, very helpful directions. I'm at the very end and trying to get the intercooler back on. Dude, this is the hardest part of the whole install. Do you have some baller "Boost & Shutter" tips and tricks to reinstall that intercooler? Bruv I'm hurting here, so close to being done.
@@akqjtn I'm thinking it's the drain hose too. I have pushed it to the side already, but it must not have quite enough clearance. Thanks for the quick reply!
@@akqjtn Stupid clarification on my part...but you mean lube up the intercoolers intake hose, yeah?
Would you be able to make a video on your un-installing and servicing to see if there is buildup?
Can you do a video for the iag oil pan would be greatly appreciated
Any tricks to get the tmic on. I’ve been trying for an hour. I even moved drain hose like you mentioned.
Good evening man awesome videos I just installed mine too but I have a problem my car send a code the pcv is disconnected can you help me with that please and thank you for your videos 🙏👌