Hello all,

I know there are a ton of threads regarding wiring your wideband to the MS2 and have read as many as I could find. I can't get my wideband to communicate with the megasquirt at all. The wideband gauge reads fine. I have the AEM x-series and it has two analog output wires (one positive and one negative). I connected the white/positive wire to pin 21 (O2 sensor input) and the brown/negative wire to pin 22 (sensor ground). This is on the BD26 optional connector.

The OEM sensor is no longer installed on the car.

I originally had a DIYPNP that I built and it communicated with a previous wideband just fine. I replaced the DIYPNP cause I doubted the build quality and the MSPNP gen 2 had a few extra features.

I'm thinking of changing where the brown wire is grounded to. Maybe another ground on the megasquirt or grounding to the chassis. Do ya'll have any input?

 

Sorry to waste your time, but it turns out that I am an idiot. Just took a fresh look at it and I wired it up wrong. I wired up the analog output of the boost gauge instead of the wideband. I swapped the wires around and now tunerstudio matches the gauge perfectly.