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Old 12-18-2012, 06:40 PM   #36
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Location: Lakeside, CA
What I Drive: 2002 Blue SVT

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Originally Posted by Sniper Focus View Post
Well the upstream one is mandatory for A/F ratio. The downstream sensor is supposed to monitor the cat, since there isn't one you'll need a MIL eliminator, a tune, or a drilled out spark plug non-fouler to get rid of the P0420 code.
I don't want to spend the money twice. It's running rich now...pretty certain, anyway. I want to put a cat on and get it up to spec, since I'll have to have it smogged in 1.5 years, anyway. Or if I ever need/want to sell or trade it.
2002 Ford Focus SVT 125k
1996 Nissan Pathfinder 250k
2001 Suzuki Marauder VZ800 9.5k
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