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Originally Posted by TCO  One more question. ZZP has the option of adding a rear O2 bung in the offroad pipe. Could I do this instead of the O2 Emulator or will I still have a SES light? |
The after market cat may or may not set a CEL. Some guys go for months with no light, and some only make it a week. Some never see it. It really seems to depend on the car.
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2004 Impala LS - got some mods
NAIOA Moderator
Making you think twice before picking on Impalas