2016 FK2 Breaking up from 3rd gear WOT

[Bain]

Hi,

I am new to the Hondata scene.
I have a 2016 FK2 - it has DP and Exhaust.

When I am doing 3rd gear WOT the car starts breaking up.
When i am on the highway 6th gear and execrate under load the car starts to break up.
I did a data log but I have no Idea what to look for or why it is doing this.

Any help from anyone will be great, please.
I have attached both logs if it help, Please Please Please.

[Hondata]

The voltage goes up the maximum the ECU can read (14.8V) and then also down to 12.0V. There may be something wrong with your charging system, battery or wiring.

[Bain]

thanks, my car battery is coming up that it needs to be replaced.
Can that be the reason?

[Hondata]

It may or may not be the cause of the misfire but it is a problem that should be fixed. I suspect the alternator but you could try the battery first.