Quote:
Originally Posted by biker2k
when they say the secondary cats are not monitored what's the deal...
i know you can buy kits and x pipes and such but its not going to throw a code?
i heard removing them is like 15 hp alone is that true?
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There are no oxygen sensors after the secondary cats, so they are not monitored by the computer. They're just like a "bonus" to help save the environment, and because they probably couldn't make the primary cats large enough to meet emissions targets. They are also very handy for covering up any unwanted fuel smell if the primary cats are removed. ;-)