Warchild Posted November 9, 2016 Report Share Posted November 9, 2016 Me gain For the OEM standard Narrow band Lambda sensor on the Subaru, what are the configurations to get the correct reading from it ? I have tried but I get the incorrect reading from it on AN Volt 4 I have the "NB Oxy" which I changed to "Lambda 1" to try and fix it, was better it seems.When I selected Lambda 1, I played with the Calibration and the ANV4 error Volt settings, but to no avail.Under Aux8 I have the Heater for the narrow band sensor configured, to work between 500 rpm and 5500 rpm as it was. Quote Link to comment Share on other sites More sharing options...
Adamw Posted November 9, 2016 Report Share Posted November 9, 2016 When you say "correct reading", what information do you want to display? Normally in PC link a NB sensor is set up only to display voltage - since the only info the ecu needs to know from it is whether it is above or below the CLL dither voltage setpoint. Quote Link to comment Share on other sites More sharing options...
Warchild Posted November 10, 2016 Author Report Share Posted November 10, 2016 When you say "correct reading", what information do you want to display? Normally in PC link a NB sensor is set up only to display voltage - since the only info the ecu needs to know from it is whether it is above or below the CLL dither voltage setpoint.There is a wideband sensor gauge in the car which will be connected later as well. SO for now I want the stock narrow band sensor readings, example, on idle, afr is 14.7, but the narrow band sensor reading is like 10 afr. Quote Link to comment Share on other sites More sharing options...
Scott Posted November 10, 2016 Report Share Posted November 10, 2016 Hi Warchild. A narrowband O2 sensor is not able to provide information on what the actual AFR is. All it can do is tell you (and the ECU) is if the mixture is richer than 14.7:1, or leaner than 14.7:1.Scott Quote Link to comment Share on other sites More sharing options...
Brad Burnett Posted November 10, 2016 Report Share Posted November 10, 2016 Warchild,I can tell you from tons of experience with the Subaru platforms that you will not want to use the factory "A/F sensor" to tune the engine.As Scott said, they are not super accurate any where except for 14.7:1 AFR.But with all the experience that I have with them, they are actually better than most OEM sensors. They will read pretty accurate down to about 12.5:1 AFR. Just about anything richer than that and it will just peg out at 11.14:1.If you have any common sensor I would highly recommend a quality wideband set up. Anything in the realm of an AEM UEGO, Innovative, Link CANLambda, Motec LTC, Ecotrons ALM.Hope this helps.Brad Warchild 1 Quote Link to comment Share on other sites More sharing options...
Warchild Posted November 10, 2016 Author Report Share Posted November 10, 2016 Warchild,I can tell you from tons of experience with the Subaru platforms that you will not want to use the factory "A/F sensor" to tune the engine.As Scott said, they are not super accurate any where except for 14.7:1 AFR.But with all the experience that I have with them, they are actually better than most OEM sensors. They will read pretty accurate down to about 12.5:1 AFR. Just about anything richer than that and it will just peg out at 11.14:1.If you have any common sensor I would highly recommend a quality wideband set up. Anything in the realm of an AEM UEGO, Innovative, Link CANLambda, Motec LTC, Ecotrons ALM.Hope this helps.BradHi bud !I agree with you 100% on everything. We tune all cars with a proper wideband setup. I was just asking to get the Closed loop scaled in so when logging etc under closed loop conditions, we would get the correct readings. Once time permits, we will hook up the Innovate LC1 system that is built into the car to the Link Ecu for proper readings etc. Quote Link to comment Share on other sites More sharing options...
Jareds Posted February 27, 2017 Report Share Posted February 27, 2017 Sorry to hi-jack the thread - Surely having a Wideband sensor ONLY post turbo on a Subaru, one would get very delayed AFR readings?I know the OEM Narrowband sensor on a Subaru sits pre-turbo for faster readings (especially at low exhaust flow speeds). I dont think the typical LSU4.9 wideband sensors can handle the extreme heat post turbo? Quote Link to comment Share on other sites More sharing options...
Brad Burnett Posted February 27, 2017 Report Share Posted February 27, 2017 Sorry to hi-jack the thread - Surely having a Wideband sensor ONLY post turbo on a Subaru, one would get very delayed AFR readings?I know the OEM Narrowband sensor on a Subaru sits pre-turbo for faster readings (especially at low exhaust flow speeds). I dont think the typical LSU4.9 wideband sensors can handle the extreme heat post turbo?I believe you meant pre turbo right?And it is a combination of heat and pressure that a typical wibeband wont like pre turbo. Quote Link to comment Share on other sites More sharing options...
Jareds Posted February 27, 2017 Report Share Posted February 27, 2017 Yeah, the OEM narrow band sits pre turbo. But they can obviously handle the heat.So how can one get a decent closed loop setup using the wideband post turbo? The Subaru exhaust system is so long, there are definitely delays! Quote Link to comment Share on other sites More sharing options...
neil brown Posted February 27, 2017 Report Share Posted February 27, 2017 I have a wide band lambda right after the turbo. About 3 inches from turbine been fine for nearly 3 years reads perfectly and works a treat car is a classic Quote Link to comment Share on other sites More sharing options...
Jareds Posted February 27, 2017 Report Share Posted February 27, 2017 On a subaru? Quote Link to comment Share on other sites More sharing options...
Brad Burnett Posted February 27, 2017 Report Share Posted February 27, 2017 Jareds,I have had tons of subarus come thru with a wideband sensor about 2-3 inches after the turbo. Havent had any issues. If you think about exhaust length, 2-3 inches after the turbo would be pretty close to sticking the sensor after the merge on a long tube v8 exhaust manifold. Quote Link to comment Share on other sites More sharing options...
Jareds Posted February 28, 2017 Report Share Posted February 28, 2017 Thank you very much. .Time to move it then . Quote Link to comment Share on other sites More sharing options...
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