Hondata

can you post the mods you have on your car? Intake, exhaust, header (cat, etc)? I see you have a MAF-based tune enabled in your calibration. If you're using an aftermarket intake this is probably why your lambda readings are off by so much

datalog attached

Thanks!


I am not real familiar with tuning on that 9th-gen platform but I'm wondering why there is a 15% overall fuel trim added in the Fuel settings of the calibration that you've uploaded. Generally that should be set to zero on a flex tune *if you have everything else ...

datalog attached

Thanks!


I am not real familiar with tuning on that 9th-gen platform but I'm wondering why there is a 15% overall fuel trim added in the Fuel settings of the calibration that you've uploaded. Generally that should be set to zero on a flex tune *if you have everything else ...

With your FlashPro connected to your computer (the FlashPro can be, but doesn't need to be connected to the vehicle for this), from the FlashPro Manager software, click the "FlashPro" button in the toolbar. This should pop up the "FlashPro" window. On the Flashpro window, click the "Calibrations ...

When I tune the MAF on the FL5, should I refer to the short-term fuel trim (STFT Geometry Dash ) or the total fuel trim value?


You should use Total Fuel Trim (STFT + LTFT) as your main reference when adjusting the MAF curve.

I tried, but from the logs I found that the short-term fuel trim ...

I just had a quick look at your logs. Yes your fuel pump is spending a bit of time in the 90s around the torque peak, but your fuel rail pressure and lambdas are staying close enough to their commanded values that I'm not seeing a critical issue in these logs. Yes there is a brief moment around ...

I never messed around with the torque model (KFMIRL/KFMIOP) on a stock turbo really because these tables didn't exist until well after I had upgraded the turbocharger in my car. I don't really think there's really much to be gained by messing with these if you're running a 91 octane tune on a stock ...

First, let me correct my earlier post. I went back and looked at my notes after making the post.

The X-axis on our ECU's compressor maps is expressed in volumetric terms (decimeters^3/s), not mass-based as I had incorrectly remembered, so the 280 is not g/s it's 280 decimeters^3/sec. The ...

our compressor efficiency map is pretty much useless at those flow rates, since we are unable to edit the index and the max value of the index is something like 280g/s IIRC. It only impacts a small portion of the actual efficiency map for even a G25-660.

which turbocharger are you running?

Can you post some logs of it doing exactly this?

the only thing i see in your freeway logs is that it's running much leaner than commanded on your pulls (e.g., command is 0.75 Lambda, actual lambda is 1.0). So the MAF scaling is off or your fueling tables are wrong? I'm not real familiar with ...

Thank you, i understand that part. My question is related to the following:

Press the start button twice without having your foot on the clutch pedal. Everything powers up but the engine remains off. Now, with a flashpro/laptop connected to the car, the live tables are updated, correct? Now, start ...

I know that the live tuning tables will update as you edit them when the engine is running (Key On/Engine On) but what about when you've keyed the ignition to the ON position with the engine off? Can you update the tables with the engine off (all green checkmarks on FlashPro Manager), and then will ...

ponsit wrote: Tue Jan 06, 2026 4:53 am

Spunkster wrote: Fri Jan 02, 2026 10:17 am Please post the calibration used directly here.

The calibration is in the link below.
https://1drv.ms/u/c/8a7e48b6734db0aa/IQ ... g?e=LWJLC8

The password is H0ndata2025

they're asking you to upload the files directly here.

For the sake of completeness (and for anyone searching due to a similar issue in the future), can you share what was the DTC and what type of tool was required to clear it?

Also, the 2020-2021 FK8 US calibrations have even more values for "Current"