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Message: <blockquote data-quote="kennethfong" data-source="post: 872114" data-attributes="member: 4371">Hi all, please help: Have just went to tune my 4g92 sohc in a foreman`s shop that has a machine called vendi to read n diagnose my ecu.... upon connection, the throttle positioning sensor is fine but when checking the logged faulty check code by the ecu, i was totally shocked to find that my car has bunch n bunch of error codes!!!! codes such as ISC SERVO ERROR, AIR FLOW SENSOR, SPEEDO, BAROMETRIC PRESSURE SENSOR and some others which i`ve forgotten are on display in the code reader....... though i tried disassemble the air flow sensor wiring (adaptor), tried starting my car n tested driving with the check engine light on (my wira is the 1st batch open loop, thus i think it bypasses the air flow sensor n follows default manufacturer`s ignition timing), the power sux big time, it`s like driving a 1.3.... then reassemble that air flow sensor adaptor back, ok no more check engine light, everything is as smooth as silk, power is back......but i was really wondering, why did i have all sorts of faulty codes when my engine is running smooth n powerful??? could anybody help???</blockquote>

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