No lambda sensor

[crispyj]

Good afternoon,

Can anyone help. I have a pre lambda s13 Ca18det. I have been reading about closed loop and how the ecu uses the lambda to get a mixture.

As my car does not have this do I have to turn off lambda closed loop in each cell on the fuel map? Or as there is no lambda connected it will run in open loop. Thanks chris.

[Matt]

Is this a 23710-44Fxx ECU? I believe they just run open loop since there is no lambda input