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Old 01-28-2010, 12:14 PM   #1
synolimit
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Default Grimmspeed AOS

i just seen this product from grimmspeed. it sounds to good to be true!! i hate oil in my intercooler and on my race bikes i always do stuff about the crank case vent so im not sucking down oil. the price is really high! $250 is lowest ive seen so far. BUT 2 Perrin catch cans will run you almost that and you have to always maintain them. what do you guys think? grimmspeed is a good company No??

Most COMPLETE and COMPACT Air/Oil Separator on the market!

An Air/Oil Separator has one job, remove the oil from the engine ventilation system so the oil does not get sent through the intake system.



...The GrimmSpeed AOS is unique as it allows you to maintain your PCV Valve while separating the oil out of the crankcase and head ventilation air! Our AOS will allow your engine to run more efficiently due to the separation of oil from the intake system. When there is oil in your system, the result is 1) reduced fuel octane 2) higher chance of engine knock(detonation) 3) worse emissions 4) higher oil consumption. Our AOS will solve all of these problems.

In GrimmSpeed fashion, we have made a very compact unit that packs a powerful punch(and looks good while doing it)!

No more having to check/empty your catch can and refilling your oil. The GrimmSpeed AOS coalesces oil without using a mesh media. Mesh medias can cause contaminates to collect and build up resulting in possible sludge. Our AOS is self maintained so you can just sit back, stop worrying, and enjoy driving your car!


Air/Oil Separator FAQ:
Q: Is this beneficial on a street car?
A: Yes. Even in stock form, you will experience oil going through your intake system. If you have ever looked in your intercooler piping you will notice a bunch of oil build up on the inside, our AOS takes care of this problem.

Q: I've heard about the milky oil substance in cold climates when using an AOS, is that relevant?
A: During our testing here in the frozen tundra of Minnesota we have only noticed very minimal milky substance from the AOS(no more than what is found under oem oil caps). We have found that because our AOS lets you keep your PCV Valve, the GrimmSpeed AOS will have less of the milky substance than our competitors. Its design also virtually eliminates an ice up condition.

Q: Why the GrimmSpeed AOS over other AOS products?
A: The GrimmSpeed AOS allows you to separate the vapors from both the heads and the crankcase. Others on the market only allow you to separate the vapors from the head. Also, our AOS allows you to retain the OEM PCV Valve. Being that it allows you to do both of these things at the same time makes it the most complete AOS on the market.

Q: How will this AOS increase my octane?
A: When the oil vapors are mixed into the intake system, it effectively lowers the octane which can cause detonation. Installing our AOS will eliminate the oil vapors in your intake system thus eliminating the loss of octane. On modified cars this let's you get more aggressive with your timing/boost maps and will allow you to make more power!

Q: Do I need to carry around a 19mm socket to open it?
A: No, we have sized the cap nut to be the same size as a lug nut. So as long as you have a tool to take your lug nuts off(which you should always have in your car), you will have a tool to open the AOS. On a proper running system you shouldn't need to open the AOS very often.

Q: How big is the unit compared to the oem oil cap? I'm running a FMIC and need to make sure it will fit
A: We created it so it will work perfectly with a FMIC as well. The body of our AOS as the same diameter as the oem oil cap.

Q: What models will this fit?
A: Our AOS will fit ALL Subaru models.
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Old 01-28-2010, 04:00 PM   #2
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$250? Its absurd. I rather buy 2 $20 catch can off ebay.

They will do the samething and with the money you save you can use it for gas money.
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Old 01-28-2010, 04:12 PM   #3
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sorry you have a problem with the price but it works and works well. for some it's worth it and to others like yourself, it's not. so going back to the old saying. dont hate on it until you try it.
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Old 01-28-2010, 09:49 PM   #4
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lol good thing i didnt say it was $300 from Grimmspeed.

Ownnij, you say it works well, do you have pics or experience with it?
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Old 01-28-2010, 10:11 PM   #5
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dude it just came out

im interested in it becuz ive had it with maintaining my catch can everytime i drive hard it fulls up quick, its a lil can but still, i have a post somewhere with a pic

grimmspeed will be maintanance free

Last edited by jokers; 01-28-2010 at 10:16 PM.
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Old 01-28-2010, 10:20 PM   #6
synolimit
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Quote:
Originally Posted by jokers View Post
dude it just came out

im interested in it becuz ive had it with maintaining my catch can everytime i drive hard it fulls up quick, its a lil can but still, i have a post somewhere with a pic

grimmspeed will be maintanance free
sorry for your headaches but thats why im so interested!! $250 is worth an easy set up and maintance free
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Old 01-29-2010, 12:17 AM   #7
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Quote:
Originally Posted by Tut4u2 View Post
$250? Its absurd. I rather buy 2 $20 catch can off ebay.

They will do the samething and with the money you save you can use it for gas money.
$20 ebay cans won't do the same thing as thoroughly without some modification. some people would rather buy a complete kit than hack together cheaper parts.


now, as far as the first question in the FAQ about whether it is beneficial on a stock car, that is not always the case. my STi's stock top mount is still bone dry with no engine mods, and I run full boost plenty (20+ track days each year in addition to opening the throttle on the street from time to time). I'm sure that some cars in stock form have blowby, but check whether you need it first before bothering with this kind of mod.
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Old 01-29-2010, 12:57 AM   #8
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Saikoumichi dual catch can is probably the best catch can available for under $150 in the market. I have their single catch can in my car; just ordered Grimmspeed AOS.

http://www.saikoumichi.com/DC3_page.htm
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Old 01-29-2010, 11:40 AM   #9
Paranoid Fabrications
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i know one of the reasons i like it is the fact there is no maintenance. with a catch can you will have to drain it, with this, just set it up once and be done with it. 250 might sound high, but there is some machine work going on with it too. you could have got on the group buy for 200 also
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Old 01-29-2010, 11:35 PM   #10
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don't have one...yet. looking to get one off of a member that has to sell theirs they just got from the group buy. but yea, I did my turbo inlet the other week. saw a good amount of oil in my stock inlet as well as the inlet on the compressor housing. I was eating up a lot of oil (bout a quart every 3k) when I was using 5w30. changed to 10w40 synthetic and never had a problem
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Old 01-30-2010, 12:26 AM   #11
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My only gripe about their AOS is that there is NOT a lot of internal surface area for the oil to " stick to " with that particular setup. You need something I.E. a baffle or some type of substrate for the oily vapor to accumulate onto, to effectively separate the oil from the air.


-Phil
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Old 01-30-2010, 02:39 AM   #12
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I got mine yesterday, I'll be putting it on shortly, probably around the same time I do my fuel-de-ionizer-thingi-ma-bobber and before my re-tune.
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Old 01-31-2010, 11:10 PM   #13
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these things are selling like billy mays endorsed them himself.

i look forward to the results on these.
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Old 02-01-2010, 11:19 AM   #14
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Quote:
Originally Posted by IMPORTIMAGE View Post
these things are selling like billy mays endorsed them himself.

i look forward to the results on these.
so would this just be like you telling me a Perrin UP is only $159 then charging a lot more? or would it be like you telling me you'll pay me back the $26 i had to pay to send the ERZ DP back to ERZ and then you not pay me back after 3 months of BS with it which then ended up costing me over $200 for a damn Perrin UP that i could of paid about $170 for and could of had it in 3-5 days instead of 3 months??????????????

get the hell off my post!!! GET BENT A** HOLE!!!

and dont even think of responding or i will post EVERY email you send with your lies so everyone can see first hand that you'd say one thing and then ended up not doing S*^%!!!!!!! PLEASE just try me!!!!
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Old 02-01-2010, 11:53 AM   #15
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He's just a drop shipper anyways lol
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Old 02-01-2010, 01:40 PM   #16
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06 WRX wagon, currently just over 126k miles. 80k of those miles are 20G powered. Oil consumption was a issue in my motor and just recently, i finally rebuilt the motor due to detonation and oil starvation. I'm assuming there was a lot of blow-by causing the detonation.

in any case, a catch can still required maintenance. $250 for something relatively maintenance free is still much better than a premature motor rebuild.
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Old 02-01-2010, 01:40 PM   #17
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06 WRX wagon, currently just over 126k miles. 80k of those miles are 20G powered. Oil consumption was a issue in my motor and just recently, i finally rebuilt the motor due to busted ring and ringland (probably due to detonation and oil starvation) I'm assuming there was a lot of blow-by causing the detonation.

in any case, a catch can still required maintenance. $250 for something relatively maintenance free is still much better than a premature motor rebuild.
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Old 02-01-2010, 03:46 PM   #18
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I paid $209 for my Grimmspeed AOS in the group buy...just came in the mail the other day...can't wait to get it on!

If it does what it says and is designed for (which I know it does), then it is well worth what I paid for it. If you don't like a price on something, the easiest thing to do is not get it or hold out until it gets cheaper or you find a used one (good luck on the last two, though).
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Old 02-01-2010, 08:43 PM   #19
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Grimmspeed has pics of it on an older Subi, anyone have pics of an 08-09 wrx and which lines they tapped into?
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Old 02-01-2010, 08:58 PM   #20
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Quote:
Originally Posted by synolimit View Post
so would this just be like you telling me a Perrin UP is only $159 then charging a lot more? or would it be like you telling me you'll pay me back the $26 i had to pay to send the ERZ DP back to ERZ and then you not pay me back after 3 months of BS with it which then ended up costing me over $200 for a damn Perrin UP that i could of paid about $170 for and could of had it in 3-5 days instead of 3 months??????????????

get the hell off my post!!! GET BENT A** HOLE!!!

and dont even think of responding or i will post EVERY email you send with your lies so everyone can see first hand that you'd say one thing and then ended up not doing S*^%!!!!!!! PLEASE just try me!!!!
Since Josh is one of the biggest most reputable vendors on here, I would say you are way out of line. Silly noob...

I'm waiting for my GS AOS and can't wait
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Old 02-01-2010, 09:13 PM   #21
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synolimit, if you had an issue with import image, i encourage you to post it in the review thread (i searched and didn't find any posts from you in there). as the above poster said, josh has a ton of positive feedback here. the funny thing is that I have heard very different stories in person...stories that should be in the review thread. i have never actually tried buying anything from there, so i don't have much of an opinion on the matter.

at any rate, back to air-oil separators...
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Old 02-02-2010, 12:16 AM   #22
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yeah for serious! I'm interested in the results.
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Old 02-02-2010, 01:37 AM   #23
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Default Grimmspeed AOS review

Disclaimer: this is basically copied from the group buy thread because I'm getting a lot of questions. I figure a thread would be useful to get them answered by somebody with knowledge (Grimmspeed) instead of me making guesses.

CN: I like the thing, and from what I can tell it's doing the job of taking oil out of the block and depositing it back into the oil supply with no sludge. My car is DD pretty hard (at least a WOT pull through fourth everyday).

I am one of the Grimmspeed testers. I've had the AOS on my car since summer, about four or five months at least now.
Live in S Cal, so I can't say anything about cold weather performance. Unless you consider 45f cold
Will have UOA in the next couple months to compare before/after.

Power mods: APS 65mm CAI; Gimmick aftermaf and inlet; PnP intercooler, exhaust mani, uppipe inlet; grimmspeed x-pipe; APS R2 exhaust. Car is making a little less than 300 @ the wheel on airboy dyno.

I have it hooked up with the Gimmick inlet. Short summary:
Install a breeze besides the PCV connection. On the 07 this is a little diff than earlier years (I've heard), it's pushing a hose onto another hose...that collapses when pushed on. Have the PCV return port on the intake capped w/brass insert & cap ~$2.50.
No more oil in intake or intercooler. Had a lot (tablespoonish, not quartish) every time I took off my intercooler previously. I know it's draining into my oil filler tube because I take the hose off regularly to check. The oil is not going back into my inlet (see pic below)
Have a dent in my hood insulation because my unit sits up too high. GS has told me the production units are lower profile to avoid interference issues.
I log a lot....like every week to make sure things are groovy. This AOS has decreased the number of random knock events at WOT (statistically, they are not gone) and allowed me to tune a little leaner and increase power. I'm at the edge of 'OK' on 91 octane and any little margin helps.
No 'cheese' in tubing. That connection to the PCV valve is a PITA and I only took it off once but there was just oily stuff, no cheesy looking gunk.

Pics:
Overall install:


dent in insulation:


PCV connection:


PCV return cap:
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Old 02-02-2010, 12:37 PM   #24
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In for results. I have the IXIZ and it's not keeping up with my demands. I have a semi built hybrid on a GT35r and it seems the GT35R is sucking the oil out of the AOS itself. Plus I keep getting condensated sludge inside the AOS and I'm sick of it ending up in my intake!

But I honestly do not see how this kit will work any better. I've had a Crawford and IXIZ on my car with the same issues....condensated crap building up. What's to say I won't get condensation on the insides of the GS unit? Hence my next question....is it metal or is is some other material like plastic?
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Old 02-02-2010, 12:51 PM   #25
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Quote:
Originally Posted by CoolRex View Post
Hence my next question....is it metal or is is some other material like plastic?
It's made of metal. I read through the entire group buy thread, but Grimspeed mentions it's made of metal.
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