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Well i got a CEL "check engine light" and its for something in the exhaust "too much air or something in the mixture"

what would cause that ?

i have the stock cat and 1 of 2 of the o2 sensors are new

i did get performace headers though... if i reset the battery it'll stay off for about a week then pop on at a stop light and stay on... getting annoyed by it.. its a really bright light & kills my gas mileage "went from 30 to about 22"

*edit*

its on a 2000 civic si with a b16a swap... chassis has 100k and engine about 50k

Edited by Coolwazabi
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Well i got a CEL "check engine light" and its for something in the exhaust "too much air or something in the mixture"

what would cause that ?

i have the stock cat and 1 of 2 of the o2 sensors are new

i did get performace headers though... if i reset the battery it'll stay off for about a week then pop on at a stop light and stay on... getting annoyed by it.. its a really bright light & kills my gas mileage "went from 30 to about 22"

*edit*

its on a 2000 civic si with a b16a swap... chassis has 100k and engine about 50k

Have your gas cap checked for leaks. My car does that every six months or so with a similar error and I go get a new gas cap (or tighten it in some cases) and it just goes away.

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http://www.stevemeadedesigns.com/board/topic/83029-everything-you-need-to-know/

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Have your gas cap checked for leaks. My car does that every six months or so with a similar error and I go get a new gas cap (or tighten it in some cases) and it just goes away.

already did that.. got a new gasket for it.. and hondas say it needs 3 clicks to make sure there isn't any fumes leaving...

and i'm running 93 octane.. that have something to do with it ?

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