Ecutek - Using rear 02 for a different sensor

[Dom2497]

As per title, I am using the rear 02 sensor for a oil pressure input. All ok but I can see the voltage feed to the sensor which I am taking from the rear 02 osciliates. Reading around it's because I am using the o2 heater to power the sensor and this uses PWM to cycle the heater on and off normally.

If I power the sensor from a direct feed to the battery it works as expected.

Does anyone know how I can power the sensor without this PWM / voltage oscillation? Is there a way I can turn it off in Ecutek?

I can see other people have run the oil pressure sensor solely off the rear 02 socket so I know it's possible.

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[tomm.brz]

i do this: Do not use custom map for that
Use Ecutek COOLANT PRESSURE (CP) sensor

you can scale your sensor there and apply SMOOTHING
put a smoothing of 0.2 (1 is no smoothing) and you ll have your output value much more stable and then with custom map you will refer to COOLANT PRESSURE to build a failsafe if you want

if you need help i can do it for you, otherwise ask your tuner to use the CP

same signal of oil pressure from rear 02, one with smoothing one without



edit: sorry didn t read well. you should NOT power your sensor with rear o2, you need a stable 12v possibly on key, change it ASAP

[Dom2497]

Originally Posted by tomm.brz

i do this: Do not use custom map for that
Use Ecutek COOLANT PRESSURE (CP) sensor

you can scale your sensor there and apply SMOOTHING
put a smoothing of 0.2 (1 is no smoothing) and you ll have your output value much more stable and then with custom map you will refer to COOLANT PRESSURE to build a failsafe if you want

if you need help i can do it for you, otherwise ask your tuner to use the CP

same signal of oil pressure from rear 02, one with smoothing one without



edit: sorry didn t read well. you should NOT power your sensor with rear o2, you need a stable 12v possibly on key, change it ASAP

Thanks for the reply, absolutely makes sense what you're saying so will switch over to cp sensor. I will get digging to find out what wiring I need to do to use the new input.

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[Dom2497]

Originally Posted by Dom2497

Thanks for the reply, absolutely makes sense what you're saying so will switch over to cp sensor. I will get digging to find out what wiring I need to do to use the new input.

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A just seen I can choose the source and can pick 02 sensor

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