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Q: Grimm speed AOS Mason Herr2 years ago
I was wondering if this AOS would be comparable to IAG's AOS. Like how does the air get separated from the oil in the blow by if there is no 'filter' to catch it?
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A: it's comparable in that they both try to do the same function. This one is much simpler and easier to install but not as effective as the IAG is at removing oil from the intake. So normally I would say this is a perfect unit for normal to semi-aggressive street driving, or a low to mid power build, where the IAG would be more idea for a big power build, or an aggressive street car, track car. Hope this helps :)
Rick C. @ RallySport Direct 2 years ago
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Q: grimmspeed AOS Murph3 years ago
How does the AOS stay secured in the filler tube?
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A: It threads in just like your oil cap does. Thanks.
Rick C. @ RallySport Direct 3 years ago
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Q: 2004 forester xt monty48483 years ago
With the gs aos does it replace the stock pcv valve or do I need to connect this off of the pcv valve?
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A: You will keep the factory PCV valve with this kit :)
Rick C. @ RallySport Direct 3 years ago
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Q: E85 capable Justin5 years ago
Is this AOS capable of working with e85?
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A: This AOS would not be effected by E85.
Brady R @ RallySport Direct 5 years ago
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Q: Power JimmyAdeux6 years ago
Is there a maximum power this AOS can hold? Example; 20psi, 340whp
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A: Performance isn't dictated by a certain PSI, rather how much blow-by the motor has. If the engine is healthy and not a lot of blow-by is making it past the piston rings, then the AOS will function properly. If on the other hand a lot of blow-by is making it through, then the unit won't be able to separate the air/oil mixture quickly enough and you'll find oil getting in your car's intake tract.
Jared A. @ RallySport Direct 6 years ago
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Q: PCV Valve Removal? VItaminRich6 years ago
Do you keep or remove the PCV Valve with this Separator installed?
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A: This will keep the PCV system.
Tyler A. @ RallySport Direct 6 years ago
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Q: Instructions for fmic xsaint77410608 years ago
Are there directions for a fmic
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A: If you have a FMIC, the instructions are identical except the bottom right port on the AOS will not go to the oem head breather hardline, it will go to your existing “T” for the head breathers.
Brady R. @ RallySport Direct 8 years ago
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Q: what is the difference between this and Perrin/Crawford based AOS systems? Evren8 years ago
if you could shed some light that would be great on my order decision. Thanks
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A: This system routes blow by back to the oil feed tube, it is also unbaffled and not recommended due to the location for heavy track use. The Crawford and Perrin AOS systems are coolant cooled and work very well for track applications. This is a simple AOS that doesn't break the bank and is much easier to install than the other two.
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Q: tune Tyson DesRoches8 years ago
does this require a tune?
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A: Tuning will not be needed for any AOS system, as it does not effect the ECU or tuning calibrations.
Brady R. @ RallySport Direct 8 years ago
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Q: fitment differences TremendousWRX8 years ago
Is there any fitment differences between this AOS and the AOS specified for the 2008+WRX aside from hoses and connectors? I am wondering if I can buy this one, and buy some 1/2 inch fuel hoses and connectors, and swap it between the two cars.
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A: This AOS body is the same as the other model and the only differences are the hoses and connectors. You could use this AOS on a 2008+ WRX if you sourced your own fittings and hoses.
Zach G. @ RallySport Direct 8 years ago
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Q: supplied hose size shiroikage8 years ago
What size is the hose supplied with the AOS? would you have the hoses in red to purchase along with the kit?
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A: The hose supplied in this kit is 1/2. We currently do not offer the hose in any other colors than black. -Matt H.
Grimm Speed @ GrimmSpeed 8 years ago
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Q: work with 2011 forester 2.5 XT? chinyue9 years ago
Can this work on 2011 forester 2.5 XT?
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A: We do not have this unit confirmed for the 2011 Forester XT and could not guarantee fitment.
Nick S. @ RallySport Direct 9 years ago -
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A: Hello, This is the part that will be compatible with your 2011 FXT. http://www.rallysportdirect.com/GrimmSpeed-078016R-Air-Oil-Separator-Red Mike
GrimmSpeed
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Q: fitment? Lovingmontyjr6002510 years ago
I have a perrin front mount on my 2011 sti. and was thinking of ordering an aos to install as well, when I checked on a friends 08 hatch it doesn't look like it will fit below the piping? have you guys experienced any fitment issues of that nature?
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A: If the FMIC piping sits right on top of the oil cap, then this AOS may not work for your application. Most of the time you can push the piping over in order to install this AOS, but we cannot guarantee fitment with the Perrin FMIC.
Zach G. @ RallySport Direct 10 years ago
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Q: Can this work with an EJ20K motor? Scott10 years ago
I've got a JDM Subie with a EJ20K motor, could this possibly work with that? (knowing it would probably require a little modification)
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A: Yes this will work on your JDM motor. The install should remain relatively the same! Mike
GrimmSpeed
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Q: aos SLUGGO 197710 years ago
can run this with an oil catch can?
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A: Yes you can, just make sure you hook it up properly if you want to run it that way.
Kirill C. @ RallySport Direct 10 years ago
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Q: 04 sti Oh9WRX10 years ago
I've had oil passing through my intercooler and throttle body. I read the description and want to confirm that this part will help eliminate this problem? Thanks!
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A: Yes this is exactly what it was designed for! As long as you have a healthy motor it should eliminate these issues! Mike
GrimmSpeed
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Q: Perrin turbo inlet Daaron6211 years ago
i have an after market turbo inlet, install required modding the hose with white/ grey plastic clip. Can i still use this product?
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A: Yes, you can still use this air oil separator, but you may need to modify that hose even more.
Zach G. @ RallySport Direct 11 years ago
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