tune off when manually uploading

[hondaguy123]

ive had this problem where car would go lean and the entire tune would be off. i started noticing it only does it when i manually upload to ecu. the car will be full lean on wideband but if i add just 1 percent fuel afr will go back to 14.1-14.3. if i dont manually upload and just let the ecu live update everything is fine but as soon as i manually upload to ecu everything goes lean.

[Spunkster]

How exactly are you uploading?

What is the serial number that is on the K-Pro board inside the ECU?

From Help, About, what is the version of software you are using?

[hondaguy123]

So I have kpro v4 and the car will run for a lil bit then it will throw a code for o2 sensor malfunction and the o2 sensor will read full lean and not read anything, when I switch out the kpro for another one of my buddies it’s fine and the o2 sensor works perfectly fine and throws no error codes.

[hondaguy123]

I’m uploading by hitting the upload arrow that is up by the lightening bolt icon
41044 is the serial number
And I’m on version 4.4.3.0

[Spunkster]

Are you swapping the whole ECU and K-Pro or are you just swapping the K-Pro board?

[hondaguy123]

the entire ecu and kpro

[Spunkster]

You need to try swapping the K-Pro boards as that will help you determine if it is the K-Pro or the ECU.