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Old 05-12-2012, 01:03 PM   #3
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Join Date: Oct 2009
Fan#: 69779
Location: el paso, TX
What I Drive: 05 silver st

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Hey I dont have the fswerks or the obx but they r the same primaries size if I was u I would buy the obx but is ur call and about the o2 bungs there is only one cause u will need to diactivate. The other 2 with a tune and the o2 sensor cheater is because u take one o2 sensor out off the cat so the cheater make the ecu think the cat is still there
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