2001 civic LX cat delete header o2 sensor
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2001 civic LX cat delete header o2 sensor
I'm a noob, so have mercy. Anyways I'm about to install a (cat delete) header. and i was wondering, if i don't do the defouler trick on the 2nd o2 sensor will i sacrifice gas mileage? i know I'll throw a CEL, but i can live with that.
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Honda Civic Forum
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