i recently installed the clear image automotive charge piping and short ram intake, and it keeps throwing codes; it says: P2187- fuel trim system lean at idle bank 1. i'v tried clearing it with a scanner, resetting the battery, retightening all connection, but it keeps coming back. it's very annoying and CIA says they haven't had this problem with anyone else, so they don't know what's wrong. if someone could just tell me what the code even means or give me some suggestions on what the problem might be and how to fix it, it'd be a big help.