Hey folks, I was out driving aggressively yesterday and my Mustangs check engine light came on. I got out one of my hand held tuners and ran a diagnostics on her, she threw 2 codes, which were PO172, system too rich bank 1, and PO175, system too rich bank 2. I cleared the codes and the check engine light is now out. My A/F ratio is 11.5 across the board, so do you all think this is a one time thing, or should I be concerned. See my sig. for my mods. Thanks for any help.