Hondata

Hello, i have this problem since last track day, afr goes lean (+18) and return normal.....another time lean........

any idea?

Attach datalog and calibration, thanks a lot

It is the lambda itself by the looks, because the output value is exactly the same as when the injectors are shut off.

Is lambda known to go off slightly at times?

Lambda sensor only have about 6.000km but i can try with new sensor if you think that its a problem.

I can buy a standard bosch 4.9 lsu sensor or i need AEM sensor with resistor?

You need to get the correct wideband for the kit you have, they are not all the same.

Ok, AEM part number is 30-2004

If sensor is wrong and i put in open loop, will the fault desapepear?

Check with AEM for the correct sensor for that kit. If it is in open look it is not using the wideband.

Yes, i check it, AEM sensor part number is 30-2004

Ok, if i put in open loop, the gauge reads good if sensor its wrong? And if i put in open loop and still same, is not sensor problem, right?

It will not read correctly until you replace the sensor.