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Wideband O2 help

Posted: Mon Oct 18, 2021 6:11 pm
by V8Rover
I have a 350 chev with 1991 CVorvette tuned port injection. This is in a Range rover used mainly off-road.
Sequential injection
Elite 2000
Wideband 1 o2 control
It was installed and tuned by a "professional"
It isn't meeting the target lambda. Typically runs at 0.85
Looking through the setup under O2
A wideband O2 1 sensor is there and clearly must be working.
Under this is O2 control (Disabled)
When I activate it I see Lamda comes right.
I have no idea if this is the right thing to do or not.
This came to light after the car started using oil (Looks like this has happened due to running rich)
The Haltech has only been in for 1200kilometers.
Hope when I get the mixture right I can sort out the expected glazing in the bores.
Any advice on setting up O2 control and or long term trip

Re: Wideband O2 help

Posted: Tue Oct 19, 2021 12:55 am
by JimKden
When turned on, the O2 control will tune to the lambda values in the Target Lambda table.
When turned on, the Long Term Fuel Trim will store the revisions to the Base Fuel table needed to meet the target lambda table values.
From time to time when the long term fuel trim is applied to the base fuel table, the revisions are made permanent.
To me the engine runs better when the O2 control long term fuel trim is done by the Elite than by if done by hand.