How many o2 sensors are on a stock 03 wrx downpipe? Is there one at the top (near the turbo) and one at the bottom (where it meets up w/ cat back) Or is there only one? Someone please tell me the for sure answer. Thank you very much

Same number as there were last week (http://forums.nasioc.com/forums/showthread.php?t=1198043)

:lol: :lol: :lol:

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