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Old 06-12-2003, 10:17 PM   #10
Scooby Specialist
Member#: 18407
Join Date: May 2002
Location: Singapore
'02 PSM WRX wagon
NESIC Trackh0z # 456


you don't need to install it at the rear o2 sensor - you can put it next to your ECU.

I don't know about instructions for an RS but I used these for a WRX.
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paulatwork is offline   Reply With Quote