335 E92 that runs very rich

[Snowman]

So i recently picked up a 335 E92 with 15T turbos, upgraded IC, decat and all regular maintenance done.
For some reason it seems to be adding fuel during WOT around 3500-4500rpm and then pulling all the fuel it can over 4800rpm.

To me it looks like it could actually be overfuelling for some reasons since both the HPFP and LPFP seem to see some strain, but what can cause such an overfuelling issue?

Here is a log of stock map:

datazap.me | Snowman89 | Testt

datazap.me

Here is a log of first attempts for custom map:

datazap.me | Snowman89 | Log 3

datazap.me

Tuner belives it related to O2 sensors, but what are the odds that both "fail" this way at the same time?

Any advice would be appreciated since im quite stuck where iam right now..

 

[dcafs]

That is running too rich.......looks almost like the fuel scalar tables are overly aggressive for the octane.
Are you running an E85 map on pump gas?

 

[Snowman]

That is running too rich.......looks almost like the fuel scalar tables are overly aggressive for the octane.
Are you running an E85 map on pump gas?

Midrange it's to lean and up top to rich. Stft swings from adding fuel to pulling fuel.

One of the logs is even mhd stg 0 and yet I have the same behaviour...
The tuner did 3 revisions where he changed the fuel scalar until he didn't care pull more fuel, that's the point where we decided to log stg 0.
So it's not related to the tune.

 

[Snowman]

Replaced the O2 sensors and it seemed to have fixed it. So i guess the problem was dieing O2 sensors.