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Message: <blockquote data-quote="myupgrade" data-source="post: 1769047" data-attributes="member: 21230">vafc / safc settinghi zthorianss..to all who uses vafc / safc for fuel / air management..i would like to know how much percentage (%) correction do u allow for the vafc?i know that maximum % we can use is 50%, but we cannot just simply put 50% correction or it will have sensor problem..i am now facing a sensor problem which is most likely caused by my vafc seeting.I have put around 42~45% (if i am not mistaken) the correction and later the sensor (O2) gone malfunction. I did bring to workshop and my foreman agreed that vafc always caused trouble to sensors (MAP, O2)..the problem only exist when i cruised along the road (maintain at one speed at one time), not WOT..i expect that the fuel is too lean (when corrected at 42%), hence the sensor cannot measure the right amount-thus jerking and engine check on..FYI, i am using b20+b16 head, and injector of 390cc..please help...anyone?thanksss..</blockquote>

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