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Re: O2 Sensors

Yes you're right the O2 is a result of the epa buttheads...  The side benefit
is that you can now install the O2 downstream, basically anywhere in the
exhaust, but some O2 sensors are only effective (backpressure) b4 the cat...
 This flexibility becomes key when you have a modified turbo engine spewing
flames and hi heat to the sensor decreasing its effective life.  I personally
used to burn up O2 on my glh turbo to the tune of 1 every 6-10k miles, so the
heated 3 wire sensor was a welcome and cheap upgrade to the car...  Sometimes
those goofballs at the EPA can do you a favor in spite of themselves...