Odd o2 issue 2011 Mustang GT

[STAGEUP]

Ive done many Coyotes and this is the first time I have see anything like this.

Modifications:


2011 Coyote Mustang
D1SC Procharger with 3.6 pulley
JBA LTs no cats
ID1050x
VMP BAP


I have checked for the following.

Vacuum leaks- None
Exhaust leaks- None
Cam angle operation
New Motorcraft Upstream o2s
No o2 extension harness is being used*
Headers are JBA LTs no cats

The o2s will read fine for a few minutes. The all of a sudden, both o2s go completely opposite of each other, and the engine obviously runs like crap.

When I tune it in open loop, the car runs perfect, and the o2s then read perfect all the time, which really confuses me.

However, I need this car to be able run in closed loop in order for it to learn alcohol composition. It will not learn in open loop obviously.

Anyone every run into this?

I have attached a log of what the o2s are doing.

Any help is appreciated. Thank you

[Mfdcar51]

Reverse the wiring

[Mfdcar51]

You might have bank 1 on bank 2

[STAGEUP]

Thank you for your response, but I also checked that and both o2 connectors are on the correct sides. I forgot to list that.

[STAGEUP]

Should I just run it off one o2 sensor?

[CCS86]

Don't do that.

[veeefour]

Should I just run it off one o2 sensor?

You can for single turbo application for example but I would not recommend doing this in your setup.