01-03-2012, 05:21 PM
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#3
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Drives: 2010 camaro 2SS LS3
Join Date: Aug 2011
Location: Denver
Posts: 1,334
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they are o2 simulators. they just hold a constant ohm level to trick computer. they are hard to find because of above
http://www.epa.gov/compliance/resour...aa/casper.html
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