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Old 03-27-2003, 08:28 PM
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whiteinte95
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Join Date: Sep 2002
Location: san diego
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Default stock car running rich

what would make a nearly stock car run rich? The mods being; ported and polished head, header, brand new o2 sensor, brand new high flow cat, muffler, intake. I thought that with these mods it would run lean.