i have a 91 silverado, and ever since i've had the headers installed on my truck the check engine light comes on at various times, i'm just wonderin if this means i need a new o2 sensor or what the problem could be? and i'd really rather go back to my stock manifolds for the deeper tone i used to have rather then the throaty sound i have now.
check engine light
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Its got something to do with the O2 senson being so far away from the engine now I think. If you do get rid of the headers let me know.
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