ok guys i have been having this code pop up after i changed my volant power core filter to a K&N filter. The maf is good cause as soon as i put everything back to stock the SES light goes off. I am really tired of this code and seems to pop up almost every two weeks.

PO175 system to rich. bank 2 i just dont know what else to change to put this back to normal. Volant even sent me a new intake tube but cause we thought it was the maf housing was off but it still does it. Any ideas/help would be great.