Cockroach

Like the title states these codes are causing a check engine light. 2008 base with factory intake with K&N filter and short tube Hooker Headers are the only engine mods. I replaced the MAF sensor (GM) as a fix with no luck. I have a Diablo tune that I have uninstalled with no change in system lean codes. I checked for any and all vacuum leaks, none found. Car runs great with no issues. Did a forum search and still unclear on a fix. What should my A/F be? I think with the Diablo I can adjust the trim levels. Thanks for any help or suggestions.