Hey so for the past year I have had an issue with my 350z and need help. I got my car tuned in October 2021 (2006 AT 350z, Test Pipes, Y-Pipe, Intake, Catback), and for 3 months after the tune had no issues whatsoever. Soon after that, I would start to get CEL every about 20 miles or so and these would be anything from P2A03, P2A00, and P0137. At first, I thought it was a sensor or multiple so I changed all 4 sensors with brand new OEM sensors which seemed to work at first but soon would throw a CEL. After this, I tried to take off my O2 extensions, which also did not work. I had a shop take some reading and what we found at first was that the left bank didn't match up with the right bank on AFR so we reset the battery and that seemed to even them out. Soon after the CEL came back up and we took more reading. The top AF sensors were 1.0 to 1.1 volts at idle, and the bottom o2 sensors were both set on LEAN at all times. We were told over the phone by the tuners to check the MAF voltage which was around 1.15-1.2 and we swapped it out with a known good sensor giving us the same thing of 1.15-1.2 volts. I'm not really sure what the issue is or what is causing it which is why I am reaching out for further clarification I do not believe it is a leak as I have checked multiple times and we are running a stock manifold and Z1 metal gaskets on the test pipes due to the flame map. Please help

 

jeebus

 

Lol, I read the whole thing and got to the "flame map" and decided not to respond