Hey everyone, I’ve spent so much money and have had so many headaches fixing the exhaust on my 4Runner. So much money spent for parts and labor. Was getting codes for not having cats and all of a sudden my air pumps started turning on at startup. So I bought the URD rear sensor simulator and a air pump delete kit for a local shop to install. They installed them and it ran great but then I got P2241 and P2A00 codes which I believe are 02 sensor codes. Do I just need to replace all the 02 sensors or do I not need to? One thing I immediately regret is going catless. It smells so bad... cars I’ve owned in the past that went catless never smelled this bad.


Mods:
Doug Thorley long tube headers (no cats)
URD off road Y pipe
URD muffler
URD rear sensor simulator