Re: 3" Downpipe - O2 sensors - Saab Performance Bulletin Board - Saabnet.com
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Re: 3" Downpipe - O2 sensors
Posted by zeke (more from zeke) on Fri, 15 Nov 2002 12:14:00
In Reply to: 3" Downpipe - O2 sensors, Neil, Fri, 15 Nov 2002 11:40:25
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I don't own a Viggen, but I think that 2nd cat' is really just a resonator.
This is the design Saab uses for their 9000. It's real function is to
attenuate resonance, I believe. Anyway, you'll definitely get a CEL
if you eliminate the 'first', probably the only cat', amongst other things!
The 2nd O2 sensor is common to all OBDII vehicles and can still
be incorporated with the JT downpipe. Whoever is fitting the 3"
cat' to your system will have to weld a threaded boss to accept the
2nd O2 sensor at the tail-end of the cat'. You may need some extra wiring, too - I'm not sure what length of wires the Viggen has for the 2nd O2 sensor.
posted by 12.91.26...
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