Hi, I have an NTK sensor to wire, apart from the 5 cables for the sensor itself, do I need to do anything with the Cal Resistor in the 7 pin header ?
thanks ---john---
Wideband fitting
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pat
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Re: Wideband fitting
Hiya John!
Sorry about the delay in answering, been flat out on prepping things for Ten of the Best.
In answer to your question, we do not use the cal resistor. You just need the 5 wires. Drive the lambda heater from one of the spare injector or PWM outputs.
The calibration curve is normally pretty close, but that said you can always cross reference it against a known meter. If you're interested in scientific analysis of the combustion process then use a proper lab grade meter, maybe a Horiba, but if you just want to make sure that you get the same AFR as when you tuned it then absolute values are less important. If the real AFR is 11:1 and the appearance is 13:1, then as long as the appearance AFR remains at 13:1 you can be reasonably confident that the real AFR is still at 11:1 too... hope that makes sense ?
Hope this helps,
Pat.
Sorry about the delay in answering, been flat out on prepping things for Ten of the Best.
In answer to your question, we do not use the cal resistor. You just need the 5 wires. Drive the lambda heater from one of the spare injector or PWM outputs.
The calibration curve is normally pretty close, but that said you can always cross reference it against a known meter. If you're interested in scientific analysis of the combustion process then use a proper lab grade meter, maybe a Horiba, but if you just want to make sure that you get the same AFR as when you tuned it then absolute values are less important. If the real AFR is 11:1 and the appearance is 13:1, then as long as the appearance AFR remains at 13:1 you can be reasonably confident that the real AFR is still at 11:1 too... hope that makes sense ?
Hope this helps,
Pat.