I've been having a misfire issue lately. I did a LONG data log today after getting out of work. I drove for about 45 minutes while logging blocks 003, 031, and 032. I never cleared any codes but for some reason my fuel trim values remained at 0 all across the board for the entire ride home. I didn't see one flunctuation on my data sheet.

I did pulls up to 6k RPM and experienced these misfire.....there's no way the trim values would remain at zero the entire time.

I've known that this is not normal at all. Is my primary 02 sensor bad?

Anyone with more knowledge can you give me a hand? Thanks in advance fellas