GrimmSpeed 02-07 WRX/STi AOS - Manual

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GrimmSpeed Air/Oil Separator
Installation Instructions
Subaru Turbo Application
All GrimmSpeed products are intended for Off-Road use only. Park your vehicle on a level surface. Fully engage the parking
brake and put wheel stops on the front and rear wheels to keep the vehicle from rolling.
Warning (read before installing):
Before moving forward with the setups outlined below, insure that you have the experience to properly modify your car. If
not, please consult a professional. Without a proper install you could possibly damage your engine. Under no circumstances
is the GrimmSpeed Air/Oil Separator to be used in any applications where failure of the AOS to operate as intended could
jeopardize the safety of the operator or any other person or property.
NOTE: Our recommended method of installation retains the factory PCV valve.
NOTE: Black anodizing finish can be scratched by tools. When installing fittings into the AOS and when tightening the center
piece of the AOS, use care to not damage the anodized finish.
Contents:
(1) AOS unit
(3) AOS Hose Fittings
(2) ½” to ½” Hose Connector
(1) ½” Cap
(1) 8.5ft of ½” Fuel Hose
(8) Zip-ties
B. Installation
1.
Screw AOS Hose Fittings into AOS Body. A dash of motor oil on the hose fitting o-rings is
recommended.
2.
Remove Oil Cap and loosely screw AOS into oil fill tube. Ultimately you want the AOS to point
towards the 11 o’clock position.
3.
Disconnect OEM hose that goes to head breather “T”: