Wideband vs. Narrowband O2's signal

[Dzaster]

No, its not about why they are so vastly different in prices and the obvious differences in there functions/opertion. I was just wondering if there are some here who are supplementing there OEM narrowband sensor/signal to the ECU with their WBO2 simulated narrowband signal.

I noticed a funny thing yesterday. I was super rich at idle and cruising (10.8 AFR) using the OEM narrowband sensor to signal the ECU like stock, but when I disconnected the narrowband and spliced in the WBO2's simulated narrowband into my ECU I immediately found that I get a much leaner 12.8 AFR. I know that is not awesome but I am using injectors that is over 2x larger than the originals in terms of cc's. 12.8 is a dream with my setup.

Anyways, I'm running it like that for now, but just wondering if anyone else has noticed this.

[messiahx]

Wow those are some bad AFRs for cruise. Your gas mileage must be pretty terrible right now. I think most people leave the stock narrowband in place since their new downpipes come with two bungs. Have you had any luck pulling the fuel out with the injection map?

With that big a difference in AFR, that means there must be a big difference in the output between the two sensors. If you were running stock size injectors, I wonder if that would cause any problems (cause it to run lean under cruise conditions).

[elderc]

My A/F's always ran in the 14's at idle and while crusing, a few weeks ago A/F's starting running in the 10's "pig rich" for no reason found out I had a bad 0/2 sensor , have you checked your 0/2 sensor ? 12's is too rich (while crusing) your going to get alot of carbon build up running like that.

[Dzaster]

Messaiah, no the additional injection map I found cannot trim fuel.

The O2 sensor is new as well as the wideband O2.

I have ordered some smaller injectors. Just waiting on them.Getting some 330's over my current 440's and the originals were 185's.

330's should suffice when in boost but hoping it helps the cruise AFR.

[Turbineguy]

A factory ECU connot make use of a wideband o2 sensor. The scaling is completely different, the ECU does not have the ability to translate readings outside the range of a narrow band, the heater circuit is different, and the wideband sensor will fail in a short amount of time. This is why wide band setups are just that. A complete setup with the sensor, driver circuitry, and gauge. They are not interchangable.

[ctrimble92]

What gear are you using?

I use an LC-1 wb senor in place of the stock sensor in my car
I have the sensor in the stock bung, running through the wb controller, and have one of the controller outputs going into the ecu. Then use a narrow band simulator through the engine management system.

Afr's are bang on stoich in closed loop