Quote:
Originally posted by Paco Pico:
The "secondary/cleanup cats" further down the exhaust stream are actually resonators, not "cats" at all, even on the California emissions trucks.
Oh yeah? Why would California and a few other states require a "resonator" then?

See item #9 and its label in this diagram from the service manual...
http://mywebpages.comcast.net/xterra/tech/04exhaust.gif

Yeah, they're cats.
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