Hi. someone know how to disable rear 02 sensors to make working bouth front 02?

i have build vr6 turbo 24v

turbo gt3071r gen 2
intake 63mm
exhaust 76mm
custom downpype with 2 original lamda sensors bank1 sensor 1 and bank 2 sensor 1
and one lambda sensor for afr gauge
maf housing 90mm with maf from audi rs4 v8
injectors at this moment stock but already have deca fi114961 630cc
sach performance clutch ceramic kit
engine spacer for 8:5 compression


at moment i tune maf scaling for 90mm
car idlle perfect afr 14.5
but have problem when i rev the car past 3000rpm then rpm comes down too fast and car stall at that moment afr is aboute 10-11
i think its because 02 sensors wont work cause rear sensors have faulth short circuit


if someone can help with tune for stock ME 7.1 ecu i will be able to pay for helping!
thanks to all and i am not asking information for free soo dont judge me!

I've done several vrt setups if you still need assistance with a tune feel free to shoot me a pm