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HO2 Wide Band Sensor To '08 Busa Harness?

 Re: HO2 Wide Band Sensor To '08 Busa Harness?
I have compared tuning through narrowband with tuning with wideband on the same b-king (with busa bin). There are of course differences, in the order of 5%-10% in the 100% tpc column. The wb creates a richer map in most cells. http://i39.servimg.com/u/f39/16/10/86/41/wb_vs_10.jpg Here in the IAP map, column 59-43 are clearly affected by closed loop operations. http://i39.servimg.com/u/f39/16/10/86/41/iap10.jpg
 
 Re: HO2 Wide Band Sensor To '08 Busa Harness?
Ballard2 still uses the stock narrowband O2 sensor for tuning, however i recently sent him a Log Box Pro(Denso) with Zeitronix Wideband so it will interesting to hear of his results when he has this set up.
 
 Re: HO2 Wide Band Sensor To '08 Busa Harness?
Pin 12 on the ECU is a standard Analogue/Digital input pin so it can receive an analogue signal from 0-5v which is why we were able to use this pin with the original log box v1. But i dont think the rest of the control circuitry for the stock narrowband o2 sensor will work with a wideband o2 sensor so you will need the wideband o2 controller. Interesting subject :) It was your clever work/programming that enabled the 0-5V Wideband sensor logic in EcuEditor and WRT. :) The pin is of course able to sense 0-5V (5V is ususally "high" in ECU curcuits), but the logic for the OEM sensor will only allow 0-1V. Any value over 1V triggers DTC (P0134 of P0135 if I remember correctly from the manual). Justin: Didn't you do some testing with both OEM "narrow-band" and a Wideband sensor int the exhaust on your B-King? If I remember I think you wrote on the B-King forum that the logged values (AFR) was almost identical for the "narrow-band" OEM sensor vs the Wideband sensor/controller. Normally a "Narrow-band" sensor is slow to react to changes in AFR and is only fairly accurate aorund 14.7 and leaner. On the rich side it is very inaccurate by design. Was your data/testing mostly cruise=on the lean side? It was some time ago since i did these tests, but yes i did log data from both the stock narrowband o2 sensor and the wideband o2 and i mapped the response curve of the stock o2 sensor so i could be used. The response speed of the stock o2 sensor seemed reasonable, obviously for serious tuning you should use a wideband as the narrowband has a very small range where it is accurate.
 
 Re: HO2 Wide Band Sensor To '08 Busa Harness?
Hi all, Thanks for all the great replies. I went ahead & bought an innovate lc-2 which has both a 0-1 volt & 0-5 volt output that I can connect to pin 12 on the ECU, which should I connect? The 0-5 volts?
 
 Re: HO2 Wide Band Sensor To '08 Busa Harness?
Pin 12 on the ECU is a standard Analogue/Digital input pin so it can receive an analogue signal from 0-5v which is why we were able to use this pin with the original log box v1. But i dont think the rest of the control circuitry for the stock narrowband o2 sensor will work with a wideband o2 sensor so you will need the wideband o2 controller. Interesting subject :) It was your clever work/programming that enabled the 0-5V Wideband sensor logic in EcuEditor and WRT. :) The pin is of course able to sense 0-5V (5V is ususally "high" in ECU curcuits), but the logic for the OEM sensor will only allow 0-1V. Any value over 1V triggers DTC (P0134 of P0135 if I remember correctly from the manual). Justin: Didn't you do some testing with both OEM "narrow-band" and a Wideband sensor int the exhaust on your B-King? If I remember I think you wrote on the B-King forum that the logged values (AFR) was almost identical for the "narrow-band" OEM sensor vs the Wideband sensor/controller. Normally a "Narrow-band" sensor is slow to react to changes in AFR and is only fairly accurate aorund 14.7 and leaner. On the rich side it is very inaccurate by design. Was your data/testing mostly cruise=on the lean side?
 
 Re: HO2 Wide Band Sensor To '08 Busa Harness?
Pin 12 on the ECU is a standard Analogue/Digital input pin so it can receive an analogue signal from 0-5v which is why we were able to use this pin with the original log box v1. But i dont think the rest of the control circuitry for the stock narrowband o2 sensor will work with a wideband o2 sensor so you will need the wideband o2 controller.
 
 Re: HO2 Wide Band Sensor To '08 Busa Harness?
I'm not sure if I need a controller, I assumed I could wire the HO2 sensor direct to the Harness & ecu? The ECU can only "drive" a HO2 sensor compatible with the OEM sensor. 4 wires (heater and sensor curcuits) and 0-1V input to pin 12 (sensor output). Every Wideband sensor I know of have 0-5V range for sensor output. So yes, you will need a separate controller for any wideband sensor. That said. Justin (among others) have verified that the stock sensor *is* indeed as accurate as a wideband sensor. This makes me think that the ECU+stock sensor indeed is a wideband controller, although it uses only 0-1V range to sense AFR.
 
 Re: HO2 Wide Band Sensor To '08 Busa Harness?
I'm not sure if I need a controller, I assumed I could wire the HO2 sensor direct to the Harness & ecu?
 
 Re: HO2 Wide Band Sensor To '08 Busa Harness?
Do you need the wideband O2 controller as well as the sensor? or do you already have a controller?
 
 Re: HO2 Wide Band Sensor To '08 Busa Harness?
This is doing my head in.... going to throw this sensor in the bin... Anyone have a recommendation for a new wide band HO2 sensor for my Gen II Busa?
 
 Re: HO2 Wide Band Sensor To '08 Busa Harness?
Found my Sensor its a Bosch LSU4.2 . I have 5 different colored wires: Red, Black, White, Yellow & Grey... Just need to identify what these cables are on the sensor.
 
 Re: HO2 Wide Band Sensor To '08 Busa Harness?
I believe I have a Bosch Sensor.. ( i bought this motor & Harness 2nd hand). It's in an offroad race buggy. is there any easy way to; 1. Identify brand/ model of the sensor 2. Identify the 0-5 V Wire? 3. Connection of the other wires on the sensor?
 
 Re: HO2 Wide Band Sensor To '08 Busa Harness?
Just wire up you wideband o2 controller to the battery via a relay which is triggered when the ignition is turned on, then route the 0-5v wideband AFR output from the controller into pin 12 on the hayabusa ecu http://www.woolichracing.com/FAQItem.aspx?Id=5
 
 HO2 Wide Band Sensor To '08 Busa Harness?
Hi All, I'm attempting to wire in my HO2 Wide Band Sensor To '08 Busa Harness? The Busa Harness has 4 wires to the HO2 & the HO2 Wide Band Sensor is a 5 Wire ? I assume it's a Bosch HO2, Anyone got any ideas on what should wire up to what?
 
 
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