Reflashing with Rear O2 Sensor 08 JDM Ver 11 STi

It is genuinely a privilege to be here.

I am an amateur enthusiast in the early days of tuning the car:

08 JDM Ver 11 STi

Crawford S3L-H 2.5L shortblock

JDM 2.0L heads with TGV deletes and mild porting

short ram intake

decatted

Still has the VF49

TMIC now a Mishimoto unit

LM450L60 and 1200cc injectors to be installed once the base tune is established

The factory front and rear sensors are in place

Also PLX wideband, post turbo.

While scaling the MAF in the the worked example, Andre mentioned that in my case I should also log A/F Correction #3.

I notice that A/F Correction #3 makes a significant (+/- 2.5%) contribution to the total trims on its own and that there is also a A/F learning #3 (not discussed in the course) which I haven't yet logged.

I am concerned that the front and rear sensors are both making contributions to the total trim even though they are seeing the same gas composition in the absence of a Cat. Is this why you disabled the rear O2 sensor on "your" car?

Should I just do the same?

Thanks!!