Hondata

Turns out that the lean-rich / rich-lean thresholds were set wrong.

Were :
Rich-to-lean: 1.19V
Lean-to-rich: 0.2V

New Values :
Rich-to-lean: 0.70V
Lean-to-rich: 0.29V

Excellent explanation from Arno as to what was going on:
- the ECU at the moment never 'sees' the correct upper voltage on ...

Exact errror codes, the calibration and datalogs showing the problem would be helpful.
Thanks for the tip :)
I don't know that the normal protocol is however I will need to talk to Romain at EuroSpec before I issue his calibration - it is his work after all :)
I will get the error code tomorrow ...

I wonder if you guys can help me? We have been struggling with a MIL light and error code which will not go away on my Honda Elise. We've installed a new o2 (primary) sensor and wired it up as per the fitment in the Civic Type R however we sill get the erorr.

Looking at the data log trace (see here ...

I am getting close to a honda instal and understand that the normal process is to use a KPro and retain the Rover ECU to handle communications with the dash etc.

1) If I use the Lotus Dash product does this dispense with then need for the Rover ECU?
2) Will this work with my model as the help page ...