My car is e46, 6 cyl engine with 2 banks of lambda sensors. I’ve been using Spartan 3v2 lite as additional sensor to adjust proper AFR.
I just installed 2nd one, which just ordered and I see difference reading old and new. Both Spartan 3v2 lite. As example when oem close loop is working old shows 14.7-14.6, and new 13,8-14.0.
Could you please advise ?
Switch controller and switch sensors from one bank to the next. See if the readings follow the controller or sensor.
I confised now actually which one is good..
Any ways to check both of them?
They are probably both good. It is normal for cylinders/banks to vary in AFR.
Is the first bank under lambda control and the 2nd bank not under lambda control by the ECU?
Sorry, I mistaken in my first message, difference more. You right, some difference is okay, but difference between tham up to 1.4-1.5 AFR, so that its 10%.
That is why I started investigation.
I will check today which sensor type set, maybe by mistake before send me product was wrong sensor type set
Its open loop now, I installed both device to each bank and templorary switch off regulation.