While I was tinkering with the MX2 I notice that the log data is VERY rough. I was hoping it was just the real time monitor that was a little flaky, but... For example, while idling, I could have RPM spikes up to 9000. Needless to say I'm scratching my head. I've included a snapshot of me in neutral just running the RPM up slowly from 1000 to 5500. I think you can see what I mean. Is this normal?? If so, how does the system compensate for the RPM spikes an not shut off the nitrous prematurely?

I guessing that maybe the ground isn't good since I'm getting spikes on all inputs including the WBAFR. What do you think?

 

I agree there is something not quite right. If you have that much resolution within the graph it should be more smooth.

 

I'm going to try changing the ground this evening. I'm currently using the factory ground that sits just below the fuse box on the dirvers side dash. I'm going to create a dedicated ground point and connect it to that. Maybe i'll get lucky.

 

New graph attached from post rework on the ground. I took if off of the common and created a dedicated ground. Much cleaner but the FJO AFR is still very dirty. I dont know if this is normal or not. I woudn't think so.

 

Dedicating a ground point was a step in the right direction. I'm wondering if you can do a hard reset to the FJO device and correct what seems to be a resolution mapping problem. It seems like it is working okay, but I agree that the signal looks very dirty (sketchy).