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Customer Photos and Videos
07WRX
The AOS was easy to install, integrates well, and is well engineered.
cgiha
Great quality, easy installation and helps the engine a lot
Jack
Very simple install with enough hose to run all new lines. Remember a 19mm socket for oil changes and you'll be fine.
FRANCES
fácil de instalar y buena presentacion
NotoriousBIB
Frist off, GS provides everything you need to install the AOS, from the zip ties to hoses. Installation was a breeze!I love that its maintenance free. My TMIC had previously been removed before i got the AOS and i did notice oil buildup inside the piping. After running the AOS for sometime, i upgraded my TMIC and during that installation process, I was very impressed at the difference in oil build up. Awesome part from an awesome company!!
adsmedley200900117
Very easy to install, i was getting a little bit of blowby and occasionaly on start up a little blue smoke after startup that would only last the first few revs, very easy to install and so far no more smoke
0 of 1 people found the following review helpful
justme142176680
This product is very well built and it solves several issues in a stock WRX. My wife's 2011 STI is sporting one solving the old oil in the intercooler issue as well as a lean condition caused by the stock crank case breather setup emulsifying the oil and winter time moisture clogging the whole system. Looks cool, works great, worth every penny believe it or not. Grimmspeed is awesome if you weren't already aware.
1 of 1 people found the following review helpful
Rick C.
Works just like it should. It keeps our intake and intercooler free from oil and looks great while doing so!
2 of 2 people found the following review helpful
15_STI
Currently running the Grimmspeed AOS on my 2015 STI. Firstly, the service from Rally Sport Direct was excellent. Super fast shipping to Australia. The AOS itself is a quality product, as always, from Grimmspeed. Very easy to install and if you take a bit of time to plan the path for the hoses, it looks very nice and tidy when you finish. Couldn't be happier with this maintenance free AOS solution :)
pjn826
Bought this the same day I bought my 16g turbo. Had smoke coming out of the exhaust, then I slapped this on and smoke went away and my car is running perfect. Highly recommend this. Looks really nice under the hood also. GrimmSpeed did a really nice job once again.
1 of 1 people found the following review helpful
andrewsti05
I bought this to replace a faulty homemade catch can set up that was on the car when I bought it. Since then I have not had to add any more oil to the car. Looks great under the hood too. Can't forget how quickly my order processed and shipped either. Definitely look forward to doing more business with RSD in the future! Thank you Grimmspeed and Rally Sport Direct!!
pjohnson380520
A great piece of engineering, simple and functional operation. Easy to install and looks great.
0 of 1 people found the following review helpful
chinga233343539
posted review need to solve this problem, on 07 sti seprator touching the hood and insulation
Ravensfan314
Install was a bit of a pain due to my old dried up, hardened, stock hoses, but its definitely doing its job so far. Didn't come with the Grimmspeed sticker though, guess they forgot mine :(
guest55c7739ecaae52f46092d7ee
Install was a piece of cake, just follow the install video online. Took me about 30 minutes with no special tools required. End result looks great and functions well.
Regan M
This AOS adds a good look to the engine and also has brought the amount of knocks down a bit due to the octane levels remaining what i am tuned for.Very nice packaging and everything is top notch quality worst part is cutting the hoses even which is user error :)
guest55c87d08caae52f4609e78ac
Very clean and crisp. The kit is very good, i recommend cleaning out your TMIC first and taking brake cleaner to the black lines that run infront of the TMIC. Mine looked like clogged arteries. For daily drivibg and light autox/track use, 5/5 product.
dsundet714
Easy to install and much easier than worrying about emptying out a catch can. AOS looks clean and the red really stands out! Will be ordering another one for my other Subaru!
jakester142690586
Looks great and works great! WOuld buy again
chinga233343539
realized that the oil separator sits to high and touching the hood because engine moves on acceleration, there is a hole on insulation
Etick performances
Like the quality of the product and all the hardware is there ready to install. But the thing I didn't like is that it doesn't come with instructions for installing it comparar to perrin oil catch can
dgirardi33938930
I bought this for my 04 STI around october, and it worked fine for a few months. However, when it started to get very cold outside a lot of oil/water vapor condensate started to fill up the lines and the body of the AOS. I was told this was normal and had to clean it out pretty much daily. When the temps got down to around 15F there was so much condensate collecting that it was draining into my oil filler tube and into the oil pan. Thus I had to change the oil prematurely... so I'd say at least in the winter, your wayyy better off with a catch can.
0 of 1 people found the following review helpful
bury_8762696
Looks real nice under the hood and everyone asks what it is. Only thing I don’t care for is it’s a bit tedious trying to pop the cover off to add oil. I think the design could easily be tweaked to compensate for this but overall it’s pretty legit and the install was quick and easy.
1 of 1 people found the following review helpful
davinelika
Been use this product for almost 1 month, no problem for daily driving, but yesterday i took my car to the track, and i realize i was having lots of oil dripping out of my aem intake, after i checked it seems like oil was sucked in back again from the middle port of GS aos
0 of 2 people found the following review helpful
STi-VN
Just brought this for 3 weeks ago... at the first install the GS AOS didn't solve my problem of high volume of blowby. And of couse it didn't do the thing it suppose to do... collect oil and take unburn fuel vapor back to intake. With the GS AOS setup my engine already burned 1 liter of oil per 256 miles...Wasted my time and trusted brand... :((((((
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