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Old 02-11-2013, 01:17 PM
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snrusnak snrusnak is offline
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Join Date: Jan 2011
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You don't need new 02 sensors unless they are faulty. You likely have 02 sensors in the manifolds and after the cats. The ones after the cats are only for emissions and don't effect performance, mpg, etc. Removing the cat won't harm anything but it will throw a code. There is a way to fix this with spark plug non foulers/anti foulers on the rear 02's.
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