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Just wanted to share a behavior that may or may not be normal- looking for clarification
Posted: Wed Sep 18, 2019 11:11 am
by gtfrede07
I have noticed that the transition from zero throttle input to any throttle momentarily causes the air fuel ratio to hover around 12.5 for a few moments (even the command does this). Is this normal behavior? Is there any thing I could do on my end to alleviate this?
Re: Just wanted to share a behavior that may or may not be normal- looking for clarification
Posted: Wed Sep 18, 2019 12:06 pm
by Hondata
Tip in throttle enrichment. Normal.
Re: Just wanted to share a behavior that may or may not be normal- looking for clarification
Posted: Thu Sep 19, 2019 10:10 am
by NikkoPH
I noticed this too on your tune gtfrede
Re: Just wanted to share a behavior that may or may not be normal- looking for clarification
Posted: Thu Sep 19, 2019 11:52 am
by Emount91
NikkoPH wrote: Thu Sep 19, 2019 10:10 am
I noticed this too on your tune gtfrede
Are you seeing the same on your tune? I think I have seen this happen with mine.
Re: Just wanted to share a behavior that may or may not be normal- looking for clarification
Posted: Thu Sep 19, 2019 2:12 pm
by NikkoPH
Yes sir, i noticed this on a stop and go traffic for 2 days now.
Re: Just wanted to share a behavior that may or may not be normal- looking for clarification
Posted: Thu Sep 19, 2019 2:25 pm
by Emount91
I actually have the opposite happening, as you can see in this datalog from 2:40-3:00, I am stopped after moving and my car idles extremely rich for a good 20 seconds.
FULLCOMMUTE091919b.fpdl
is that an AFM problem? should i watch at what AFM.v the car idles at and pull fuel from that range?
Re: Just wanted to share a behavior that may or may not be normal- looking for clarification
Posted: Fri Sep 20, 2019 4:54 am
by gtfrede07
It isn't an "issue" more so an annoyance when your tracking everything. I have known about it for about a year but its always been there no matter what flash is running on the car and I believe it would be there even with factory map (no way to quickly check afr with tach when returned to stock).
Its a commanded function by the ecu. Probably done for catalyst health/driveability.
I'm not worried about it but I do wish we had access to adjust the amount of time it does this. Feels like it does it for a full 3-4 seconds which to me is excessive for smooth tip in delay.
Hondata is this manipulate-able at all? Via fuel overrun?