P0171 and P0174 Codes after Stillen CAI - Help needed

Jazzster

My car is a 2010 auto, with 12,000 miles on it. After installing my Stillen Gen 3 CAI everything was fine for several weeks. I almost ran out of gas (was headed to gas station) and was idling at a light. The RPMs dipped a bit, enough to notice and cause the engine to shudder a little (AC was on high) then came back up and threw a CEL. I was hoping it was just because I was so low on gas. After filling up, it didn't fix it. I read the codes and cleared them, but it came back. I have Dash Command and have monitored it and captured log files. Hoping someone here can read and interpret. I also have a FI exhaust installed but I don't think that has anything to do with it. Car is an automatic.

What it does:
- Throws a lean code (started ONLY on P0171 passenger side but is now doing P0174 as well). Only occurs when idling.
- Engine pulls strong - no issues, no shuddering while accelerating or cruising.
- CEL Happens over and over - pretty much any drive where I have to sit at a light for very long.

What I've done:
- Checked for vacuum leaks on intake. All hoses and clamps seem tight and good. CAI was installed for a few weeks with no issues at all.
- Cleaned both MAFs.
- Dumped in a bottle of Gumout REGANE fuel system cleaner (has not run all the way through the tank yet though).
- Logged the data with Dashcommand

Log file is here

Don't think it's O2 sensors - car only has 12K miles on it. Seems odd the issue started when I almost ran out of gas - could be coincidence though. If it was a CAI install issue I would think it would have popped up immediately and not waited weeks. So I have no idea. Hoping someone here does.

Thanks!
James