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Discussion Starter #1
I try to connect my APEXI timer to oxygen sensor , my car is 2007 WRX2.5L in china ,
I studied the handbook of timer , and I split the floor on the copilot side ,come out the ECU , but I don't know which one is correct , so I connectd one white wire, but I found the timer's voltage data changing from 0.2~ 2.8 ,
I don't know if my engine has problem or wrong connecting . but I know the voltage changing range should be around 0.2v~0.8v . I thought perhaps I connect wrong wire , does any one can help me ? the best way is show a ECU circuit diagram . because I found too many white wires connect to ECU .thank you !

I know my english is very poor , sorry ,and hope you can understood what is my mean .
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