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Discussion Starter #1
I had the pen looking apexi timer with A/F display, however, it never works out for me. Because i have A/F ratio sensor in the front and that gave different voltage. Then i tape onto the 2nd bank O2 sensor, yeah it works but not accurate. Then i installed a universal single wire O2 sensor on the down pipe, but my A/F just keep flash without any number. (voltage goes up from 1.xx to 0.02). Is there suppose a setting for the timer or something?

thanks
 
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