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Old 03-27-2012, 06:18 PM
JasonRB2k1 JasonRB2k1 is offline
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you do still need them with the cats. I got the ones with the high flow cats, but the system will read there isn't enough variance between pre and post cat o2 sensors. I held my pipe with the cat on it close to a light source, and you can see right through them.
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