OEM O2 sensor swap for wide band data ?
 

Been awhile but crossing the 52 K mark with the 05 R1100S BCP. Th bike is de-cated, Y pipe K&N air, and tech FI module. I obviously have it running to rich , though it runs well.
My question is can I use an AFR data logger with wide ban in place of the stock O2 sensor and get accurate results. Or do i need to put on an additional bung?

Read this recent thread - http://forums.pelicanparts.com/bmw-r1100s-r1200s-tech-forum/1004590-new-upgrades-impressions.html, Roger 04 RT has your answer...good luck...

That was great. Thanks. Appears since I have a FI controller and no cat I don't need the O2 sensor. Which mean I can hook up the wide ban data logger and play with the 4 mapping pots. Will probably have to unplug the narrow band since it will send an erroneous signal. When I had the GS11 on line and the NB O2 was dangling in the open air it had a fairly flat 4.0 graph. Then it did like you would expect when installed and fired up lean rich lean rich. So will see how it goes tomorrow. Thanks again.

I just finished tuning the fueling on a T206H Stationair with GAMI injectors. What turbo do you fly?

Yes you can put a Wideband in the stock bung. Which Wideband do you have? If it’s an LC-2 you can put it in the stock bung, richen your mixture using its lambda-shifting capability, reconnect it to your Motronic, eliminate the clunky Techlusion, AND make recordings of your on-road AFR.

Well not flying any more but it was simple Turbo charged subaru ea-81 Model 5 Kitfox std wing.The engine I built my self. Was putting out about 160hp with the ellison throttle body. Miss that little bird.
The wide band is with the Fast AFR data logger. Wanted to run it to see where I am at. But was worried the stk narrow band needed to disconnected to get it all to work. Then with it disconnected am I going to get an accurate reading? Just don't want to put on an extra bung. May have too.

Visit the Innovate site and read up on the LC-2 controller. You can download the data logging software and also the software to make adjustments to the LC-2 controller. The main advantage of the LC-2 over the AF-xied is the data logging ability.

I really like the idea but the actual wiring is a bit dubious. Just give me a rod through the case and i can figure that out. OK maybe not that bd but you know what i mean.

If the sensor on your wideband is Bosch LSU 4.2 or 4.9 it will directly install in place of your old sensor.

I will have to check, but I will still need to be able to run output to the ECU and data logger . I do appreciate the help.

Yes LSU 4.2.

You can't really run output TO the ecu, the LC-2 reads the O2 and logs the AFR. Then you use Innovate software and program the LC-2 to interrupt the signal from the ecu to make the changes you want to get the target AFR.
To me, that's the major difference between the AF-xied and the LC-2. I figure for the time and expense it takes to do multiple data log sessions, it's quicker to play with the limited selections on the AF-xied.
There is software to read and write changes to the ecu for Ducati's and most other ecu's but as far as I know no one can write to a BMW ecu.

One more quick point, unless anything has changed since I spent over 40 datalogging sessions on my Ducati, you have to leave the wideband O2 sensors in the bike and they are not designed for daily use. They are for datalogging and then update the map on the ecu and put the standard O2 back in the bike. The life is a lot shorter and at about $60 each you don't want to change them more than is necessary.

I guess I am trying to save a little money. I have been running the Dobeck Gen 2 for years. I just finished re-mapping the 999s, no factory o2 on the 06/07, that is with the PC USB III unit. So got a wild hair to mess with the BMW. I have the FAST data dual ch AFR data logger. I know the LC-2 is not a lot of money and the real time, all the time display would be a nice touch. For me it might be easier just to go with their AFR gauge and just tig on the bung. I guess if the Dobeck unit ever craps out , then the LC-2 would be a no brainer. In any event I alway learn more than I could ever contribute to the group. This is the way she is running at present.


http://forums.pelicanparts.com/uploa...1537320804.jpg

In my opinion you want to tune each cylinder. Double the LC-2, but with one LC-2 you are getting an average not a true reading for each cylinder.
When I tuned my Ducati at first I went cheap and while we could get the AFR at the target number, but it still ran like crap. An interested Ducati tuner in Australia told me to get bungs on each pipe and 2 LC-2's and he would take my datalogs and run them through a spreadsheet and then send me a new map to test . We found the front cylinder was 50% lean and the rear cylinder was 50% rich.
Once properly tuned it ran like a Ducati should and got between 45 and 50 mpg.

On the duck I did do dual bungs, not a big deal. On BMW I am conflicted on intruding into the factory pipes. There is no logical reason not to. You are right for sure on the readings. In fact just did the remap on my duck. I will be amazed if i get close to 45 :)