1972 Chevy Pickup Project.

[Jason7121]

You can leave the rear 02 sensors out and either remove wiring to them or tape off inside the loom. Your ecm will need to be reflashed to delete the rear o2 sensors. The rear ones monitor cat converter function and won't effect how it runs. I deleted rear o2 sensors on mine and had ecm reflashed.

[thetucks]

Originally Posted by Jason7121

You can leave the rear 02 sensors out and either remove wiring to them or tape off inside the loom. Your ecm will need to be reflashed to delete the rear o2 sensors. The rear ones monitor cat converter function and won't effect how it runs. I deleted rear o2 sensors on mine and had ecm reflashed.

where do you have the ecm flashed?? cost?? thanks