How to wire zeitronix wideband into ecu?
May 3, 2013, 08:08 PM
#4
There is a more accurate way of logging the zeitronix through the ECU.
There is always a voltage variance between the analog output and what the ECU input see's.
Once you connect it to the ECU, turn on the wideband but unplug the sensor itself (with the engine OFF). The analog output will output 2.55 volts (14.7:1 AFR). In Evoscan, if you set the formula as just 'x' 2.55 volts would read 130.
99% of the time this wont be what it reads.
replace the letter 'P' with whatever you logged when you had the formula set to just 'x'. reconnect the wideband sensor and now your readings will perfectly match.
(10/255)*(x*(130/P))+9.6
-Jamie
There is always a voltage variance between the analog output and what the ECU input see's.
Once you connect it to the ECU, turn on the wideband but unplug the sensor itself (with the engine OFF). The analog output will output 2.55 volts (14.7:1 AFR). In Evoscan, if you set the formula as just 'x' 2.55 volts would read 130.
99% of the time this wont be what it reads.
replace the letter 'P' with whatever you logged when you had the formula set to just 'x'. reconnect the wideband sensor and now your readings will perfectly match.
(10/255)*(x*(130/P))+9.6
-Jamie
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May 12, 2013, 08:29 PM
#8
There is a more accurate way of logging the zeitronix through the ECU.
There is always a voltage variance between the analog output and what the ECU input see's.
Once you connect it to the ECU, turn on the wideband but unplug the sensor itself (with the engine OFF). The analog output will output 2.55 volts (14.7:1 AFR). In Evoscan, if you set the formula as just 'x' 2.55 volts would read 130.
99% of the time this wont be what it reads.
replace the letter 'P' with whatever you logged when you had the formula set to just 'x'. reconnect the wideband sensor and now your readings will perfectly match.
(10/255)*(x*(130/P))+9.6
-Jamie
There is always a voltage variance between the analog output and what the ECU input see's.
Once you connect it to the ECU, turn on the wideband but unplug the sensor itself (with the engine OFF). The analog output will output 2.55 volts (14.7:1 AFR). In Evoscan, if you set the formula as just 'x' 2.55 volts would read 130.
99% of the time this wont be what it reads.
replace the letter 'P' with whatever you logged when you had the formula set to just 'x'. reconnect the wideband sensor and now your readings will perfectly match.
(10/255)*(x*(130/P))+9.6
-Jamie
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