What is the code(s)? Usually incorrect O² Transport Delay will throw "slow response" DTCs, P0133 and P0153...
If the O² sensor element (signal or ground leads) had +12V (from the heater circuit) applied to them the sensor would be damaged. Double check the wiring in the extender and if it is OK try a new sensor--after triple-checking the wiring.I do not have a wide band o2 system, the MAC cold air intake has the stock MAF from the car. I do not know what the curve is for the MAC intake and calling the manufacture is getting me no where. I did try and do MAF calibration (through the tuning school) and I kept coming up with a transfer curve of 1.
I have just recently replaced the o2 sensors because with the 02 extenders bank 2 was reading 1666 even with the key off.
Curious, what code(s) are you seeing?I double and triple checked the wiring and the extender was bad. Have had that replaced. Got the issues with the O2 straightened out and I am just getting a code for the MAF. But I think it is pointless at this point since it has been determined that my bottom end bearings are starting to go..