JasonR
05-07-2004, 06:43 PM
Started this topic to hear everyones opinion on widebands and where you should bung the sensor after hearing this quote below? I put mine as close as possible to manifold. Have not noticed much of a difference compared to wideband on dyno when I tuned other then the fact when I dynoed I converted to fwd. I never tune on street, but have the wideband for an accurate reference.
Quote (Jet, may 7 2004)
Why did you reference a .94 O2 voltage if you have a wideband in the car?? That doesn't make any sense why you would even pay attention to a narrow band O2 sensor and not state what your WB02 was reading. Also, DSMlink should be approximating the AFR's from the fuel going in and the air going in. It shouldn't have anything to do with the stock O2 sensor. There should be a seperate logging input for that.
Also, a WB02 bunged that close has proven to be inaccurate in other applications. They should be 12" - 16" from the turbo.
I referenced .94 o2 voltage from dsm link under load. I always use dsm link. More importantly I always look at voltage for 02 because I have been using c16. Wideband gauge tells me a/f ratio (lien rich) not voltage, only meant for reference while driving. I stated what narrow band or what dsm link tells me because I assumed this person would know the difference. Looking at my last capture run under load, it indicates .94v fronto2, 6000rpm, a/f ratio 9.52, timing 17.9, no knockret. I did state earlier on dyno wideband avg. 12.0 a/f ratio wot. Definition of oxygen sensor is: Use with the feedback system to sense the presence of oxygen in the exhaust gas and signal the computer which can reference the voltage signal to an air/fuel ratio. That is answer to his question, but bunging the wideband to close has been proven to be inaccurate. Not in my case. What are other people doing or where do they bung the sensor for wideband? :3gears:
Quote (Jet, may 7 2004)
Why did you reference a .94 O2 voltage if you have a wideband in the car?? That doesn't make any sense why you would even pay attention to a narrow band O2 sensor and not state what your WB02 was reading. Also, DSMlink should be approximating the AFR's from the fuel going in and the air going in. It shouldn't have anything to do with the stock O2 sensor. There should be a seperate logging input for that.
Also, a WB02 bunged that close has proven to be inaccurate in other applications. They should be 12" - 16" from the turbo.
I referenced .94 o2 voltage from dsm link under load. I always use dsm link. More importantly I always look at voltage for 02 because I have been using c16. Wideband gauge tells me a/f ratio (lien rich) not voltage, only meant for reference while driving. I stated what narrow band or what dsm link tells me because I assumed this person would know the difference. Looking at my last capture run under load, it indicates .94v fronto2, 6000rpm, a/f ratio 9.52, timing 17.9, no knockret. I did state earlier on dyno wideband avg. 12.0 a/f ratio wot. Definition of oxygen sensor is: Use with the feedback system to sense the presence of oxygen in the exhaust gas and signal the computer which can reference the voltage signal to an air/fuel ratio. That is answer to his question, but bunging the wideband to close has been proven to be inaccurate. Not in my case. What are other people doing or where do they bung the sensor for wideband? :3gears: