Originally Posted by
i8urvtec Because if i can run a skinny 02 on a usdm ecu it will save me a trip to the muffler shop to have a fat bung weld to it but if I have to change the bung on the j pipe then I will
Personally, I wouldn't mix o2 sensors. Use the one ECU requires or you will be getting more headaches that does not worth it. Skinny and fatty are different internally so they behaive different too.
I had a fatty rear O2 sensor brand new on my stock 98 ECU and when placed JWT 97 ECU had to replaced it with a new skinny as the other did not worked properly.