Anyone successfully running a wideband with narrowband output into OEM (or piggyback)

That's because PLX gear is the bomb [TIS]

 

Beemer is going like an absolute champ. Hasn't got the boost rush the zed had but makes up for it by being reliable, smooth (sort of - has bilsteins), and the best noise this side of a ferrari :br:

 

Damn - you have to post a vid some time dude - a must hear and see!

soz mike for off track for a min - back on track...

Cheers
Jamie

 

Narrow band EGO is only relevant @ stoich (14.7) and the volatge v's AFR scale is nowhere even near linear.
NBo2 only represents 14.7 and anything either side is considered purely "Rich" or "Lean"
Here is a representation of Vout against AFR



This image ignores temperature variations which greatly influence the Vout.

In closed loop mode, the ECU will cycle the mixtures around 14.7 to achieve an average AFR. NOT a steady state 14.7 Its why you will see your ARF guages in your data readouts cycling a couple of times a second.

In some cases, you can actually hear this cycling of mixtures in a particular engine which employs NB closed loop idle in the form of a very slight and rythmic change in engine sound.
Disconnect the EGO sensor and that engine will then idle in open loop and the slight cycling in the engine sound will vanish.
If the Zee idles on open loop purely against rpm, TPS and airflow, then you wont ever notice it.

Wide band EGO outputs a linear voltage/AFR scale and since most WBo2 sensors are temperature controlled and compensated by quite sophisticated circuitry.

E

 

I don't know about aem wb but the innovates simulated narrow band works just fine. I run it for some years now and works very smooth. all the datalogs I done saws that it works around 0-1 volts when cruising.