I've heard some good things about the high flow cats on the market for 2.5s, so it may definitely be worth looking in to! No experience with them myself tho. I've still got the stock cats/mid-pipe in my car...
Those 02 sensor bungs that move the sensor out of the exhaust stream I'm unsure of as well. It may work to help the CEL problem people have with headers/stock cat, but I don't know that it'll help the switching rate enough if you have no cats at all...
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"...these condoms have a topical anesthetic to reduce sensitivity, so you can last longer. What a paradox. You can't feel a thing, but you can f*ck for HOURS..."
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