STFT Active - in Open Loop

[wal]

Hi, how are you?
This is the first time I've seen this. I can't figure it out because I'm still getting corrections in WOT.

The car is a K20/K24 build with 12.5 RC cams.

I made several maps for different friends' cars, with different configurations, but this is happening with mine.

I've attached the map and log.

There's a part of the datalog where the IAT disconnects, which is why I'm getting a DTC.

I would appreciate it if someone could see where I'm going wrong.

[wal]

Does anyone have any idea what might be happening?

[Spunkster]

Most likely there is an intermittent wiring issue that is causing this.

[wal]

It's the original wiring, it would be strange but I'll check.
Another strange thing that sometimes happens is that when I connect it, the Hondata's lights keep blinking until I disconnect it from the car and the computer. When I reconnect it, it works correctly.

Is it just the O2 sensor wiring or could it be anywhere?

[wal]

Another thing that sometimes happens is that while the car is idling and I connect the Hondata, it revs slightly and then returns to normal.
Could this be an internal problem with the device?

[Spunkster]

What is the FlashPro serial number?

[wal]

I'm not home right now, but I'll be back on Thursday and I'll share the information.

I don't know if this is relevant as additional information, but this car had a K20 engine, then a complete K24Z1, and now a K20/K24. I didn't have these problems before.

The only thing I remember modifying (without cutting wires) is replacing the MAF sensor with an IAT sensor.

[wal]

The serial number is FP-SI-US-15091

[Spunkster]

Your software is out of date. Please download the most recent version at: https://hondata.com/software?route=info ... nformation

[wal]

I tried checking for updates, and it seems I have the latest version. However, I don't fully understand the versions mentioned in the message.
It seems I'm using the beta versions, but I don't remember selecting that.



I can try reinstalling everything from scratch, should that work?

[Spunkster]

Just download and install form the link I gave.

[wal]

I tried it with everything updated and got the same result, so it seems to happen after engaging VTEC.
Attached log

[Spunkster]

I don't see any errors and short term fuel trim appears to be acting normally.

[wal]

It shouldn't activate in wot, I don't understand why it doesn't stay in Open Loop, after engaging VTEC it switches to closed, I can't understand why it does that.

[wal]

I don't see any errors and short term fuel trim appears to be acting normally.

Another thing I noticed, and I don't recall if I mentioned it before, is that at the VTEC point, it displays "Open - Cold" and then switches to "Closed Loop." From that point until the cutoff, it remains closed.

Could you take a look at the calibration?

I'm not sure what property is causing this, or if it could be a faulty O2 sensor heater.