So I have a b16 swap into my 1990 Civic hatch. DC-Sports 4-2-1 Header with one o2 sensor. I have the 2nd one wired from the ECU to the 1 and only o2 sensor. After a hard pull I will get a CEL light for the O2 or when I am at high rev's and let off the gas and coast it will give me a CEL for...
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