Finally got my wideband logging sorted now - its very very handy and I can see me using it LOTS in the future!

I've just been out of a drive - I could see that the Narrow Band seems to be requesting around 12:1 afr! when I compare it to the Wide Band (Other exhaust) To try and tell which one was lying I disabled closed loop (Min Temp High and "Open Loop" Adjusters all set to zero) The car floated around the 14.5-15:1 (WB02) mark and felt very happy - smooth and keen.

I pulled over to save the log and had to power down the PC and swap batteries. I restart the car and it feels like crap... I booted the PC back up and started logging again - 18-20:1 on the WB!! I tried to drive it a few minuites just to get some data but it was terrible - I did notice that in PE it cleared and went pretty good and AFR's were closer to what I'd expect.

Now I've had a look at my logs and the only difference thats really jumping out at me is the BLM. On the first one it was locked at 160 and the second (lean) log its locked at 133 - could this be the difference or am I barking up the wrong tree?

I may well try and use the WB02 to simulate the NB at least then there reading from the same page.