Originally Posted by Stu @ M Developments
I was under the impression it needed to be at 0.9% (to be rich enough on boost, global modifier and all that) so I messed around with it but couldn’t richen it up without it switching to the conventional map (non closed loop).
As I didn’t wanna take up too much of pat and rob’s time, we got it running at about 1% CO but I think its too rich as it keeps swapping from closed loop to normal (I can tell this by the voltage output from the lambda).
Upon chatting with Stu after I had got home it seems perfectly fine to have it running at 0.5% CO and 0.9% is the maximum value. So all the fiddling was unnecessary, just my luck!
That conversation had me doubting my own kit yesterday, so i dug out the instructions to double check what i wrote and it says this:
Simply ensure the fuel mixture is below 0.9% with the engine hot and all electrics switched off. No further adjustments are required and the instructions to adjust co for non lambda software can be ignored totally unless the Co needs trimming down to meet the figures above.
So...
all sorted, will be at 0.5% on saturday morning
it idled very smoothly at this point, just didnt have the instructions with me, but did re-read after and it does say 0.9% max value
0.5% is pretty much lambda =1 so the chip must be doing its job
