GrimmSpeed 08+ WRX/STi AOS User Manual
Page 6

12. Install 5/8" elbow (1) so that it is pointing towards the driver's side of the engine bay.
Install approximately 2.5" of 5/8" hose (2) into the other end of the tee. Then install 5/8" to
1/2" hose connector (3) into the 5/8" hose. Then install the remaining 1/2" hose into the
connector (4).
13. Route 1/2" hose(arrow 4 above) back to the left AOS port. This hose needs to be long
enough so that it will tuck under the intercooler when it is reinstalled. Place zip ties on all
hose barb connections. Reinstall intercooler. (this includes the outlet hose clamp, BOV bolts,
mounting bolt, and turbo outlet bolts). Skip to STEP 19.
STEPS 14-16 are for 2008 WRX ONLY
14. Locate crankcase breather port Tee near the turbo. Disconnect the electrical connector
from the tee. Disconnect the 3/8" PCV line from both ends. Rotate the crankcase tee 90
degrees.
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2
1
4