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Message: <blockquote data-quote="khoyos" data-source="post: 4495147" data-attributes="member: 711">i'll try to answer ur question based on the assumption that ur car is currently running OK, with the exception of the wideband reading stuck at 18.0. but before that, i need to know the following:1. OK u have the dynojet wideband AFR sensor. is it linked to the ECU (does the ecu take the oxygen reading from ur dynojet?) or is the output ONLY linked to the display unit?2. are u using 2 oxygen sensors? (OEM narrowband and dynojet wideband?)3. if i'm not mistaken, stock o2 sensor is 0-1V (apexi timer gets from this reading) and wideband is 0-5V. so my guess is that if ur apexi is showing a reading, most likely the reading is taken from the stock o2 sensor.4. memang wideband sensors have a lifespan. the life ends quicker if the car is daily driven...5. if ur ecu gets its o2 reading from the OEM narrowband sensor, then u dont have to worry. just replace the wideband o2 sensor. if i'm not mistaken dynojet uses the widely available bosch LSU4. replacement sensor costs around rm350-500 and available locally. just bring back the car to N1 to have it checked. if the wideband sensor confirmed kaput, the sensor is available here http://www.mudah.my/Bosch+Wideband+sensor-6865900.htm. dont forget to have the sensor calibrated. properly calibrated sensor will have a significantly longer lifespan.p/s try to also check the sockets connecting to the sensor. usually if there are some sockets loose/tercabut, the wideband reading will also go to max lean (18.0 in dynojet's case)</blockquote>

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