O2 closed loop MAP threshold

[Admanirv123]

Allow o2 feedback based on boost load and look up of afr table as opposed to just currently tps. Will aid turbo spool up by running consistent leaner mixture, but suggest possible max psi in o2/afr eg 6 or 7 psi due to possible limitations in throughput/cpu of the 2560 in altering mixture in timely/accurate manor. Would not like to rely on closed loop in 100 throttle at high boost values.

[VitorBoss]

Are you using alpha-N fuelling?

[Admanirv123]

No I am not.

[VitorBoss]

I asked because is already based on load look here https://github.com/noisymime/speeduino/blob/94e90c5f637e4aabfdb9b61a4dff4b0a9fd4e3c7/speeduino/corrections.ino#L622

[Admanirv123]

Hi, for example if I had requested 12.6 afr all the way to 150 kpa in afr target table I have to be x throttle defined in afr/o2 settings typically 100%. But I don't want to run 12.6 afr all the way in max boost ie target 250kpa in full throttle as its too lean, hence why a switch off would be good ie max o2 closed loop feedback (active below x kpa) so effectively another option 'active below kpa' in afr/o2 option. I wouldn't like to use closed loop fueling all the way to redline at high boost unless the mega can alter and maintain fueling in timely fast manor? Can we categorically say it can without issue to high revs and high boost?

[VitorBoss]

Ok, what you described is very different from your initial text, can you rename the issue to "O2 closed loop MAP threshold" to be clear the intent of the request?

[Admanirv123]

Thanks fair point Sure I will change, I thought its was clear in the first post esp with max psi in o2/afr, it's because I've had to justify it by more explanation.