If you wish to use your narrowband in an OEM configuration for MOT/Euro emissions testing, the following settings will be optimal to allow this. Ensure you have wired the signal line into a chosen analog input (or the OEM one if a Plug In system) and set that channel to O2 RAW in the Analog Input Settings.


If does require your fuelling (VE table) has been tuned such that without lambda control you hit "approx " 14.7:1 AFR between 2500-3000rpm at low load. The narrow band will auto adjust in real time to get it right, but it must be at least close to start with.


You can see that we are taking advantage of only allowing narrowband tuning to occur at ROPMS of 2500-3000 below manifold pressures of 60Kpa, by setting the target AFR table to 14.7 in these zones. Any zone which doesn't have 14.7 will turn Narrowband control off (as the sensor is only accurate around 14.7 anyway).


Watch the Lambda Status DRO for info as to what is going on, or, any reason as to why it isn't trimming (ie is it out of bounds such as not warm enough etc). If you see the trim go to the limits of authority (set here to +/- 20%) then it means your VE table is NOT tuned correctly.