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Old 02-19-2013, 02:15 PM   #15
2nd Gear Member
Join Date: Jul 2011
Location: ottawa
Posts: 97
ok the headsers ive seen have the post 02 bungs but i also see what your getting at with the air pump and the pre-02 sensor being lean and the post giving different readings... man.. tougher then i thought i might just not go with header... im not sure i dont want to go through the headers of switching them in and out(Like i did on my previous car) haha
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