Closed loop issues on s300

[EvanRevD]

Hey guys, hopefully im not asking you to beat a dead horse here, but im really struggling with closed loop here.

it seems to be hit and miss on these, ive done a few, im hardly a "honda tuner", usually standalone. Last hondata s300 i tuned, i simply turned on
closed loop after tuning the car in open loop, and it worked, pulling +-2% as it should.

Ive got an integra here, turbo, on s300, with 600cc injectors. I tuned it open loop and everything is within a few percent. Ive got an aem xuego run to the o2 input of the ecu. I have the brown wire grounded at signal ground. i have spot on readings at the ecu confirming gauge reads same as ecu.

The second i make the change from open to closed loop, it goes to 10 afr, HOWEVER it is not showing as a long or short trim. It will do the same if i set the trim values to 0%. I also tried it in o2 voltage target, around 3.1v (stoich on this gauge). same results. If i trim the fuel out, and lets say make it a bit lean, it will NOT add any fuel or correct in any way.

my map is attached if anybody sees something i dont. I always seem to have issues with closed loop on these, either going instantly lean when its enabled, to this now going full rich when enabled.

Thanks in advance

[Spunkster]

You should use D10 as the input for a wideband as D14 cannot see the full voltage range.

[EvanRevD]

ok, i can check that out. Will that typically piss it off?

I likely need to check if the resistors mentioned in the help are there?

[Spunkster]

You should make sure you do what the help file says.

[EvanRevD]

Alright well that was annoying

Removed resistors mentioned in manual. Moved wideband over to eld input. Car became a bit richer without even enabling closed loop. Anyways scaled the fuel back and enabled closed loop and it started functioning as intended. I did have to scale a bunch of the low map and a bit of the vtec map to get things back where I had them. But it’s working now.

Can anybody from hondata explain why this is ? What is happening in the background to explain why so much work is required to make the function work. I plan to check closed loop functionality before tuning any future cars because of this one.

Thanks !