SO i had a check engine light come on on monday, and I ran the code and it came up P1122, which ended up being that my stock air/fuel ratio meter was broken, so I replaced in yesterday with an oem one from a dealer and reset the code. Today the check engine light came back on with the same problem, and my car idles really really low (about 200 sometimes 100 rpms) also after driving it for the first time today it died on me after pulling up to a light and puttin git in neutral (rpms went below 100) ne ideas what the prblem is? couls it be that I need to fix teh idle? please help

 

what kind of mods done to the car?

 

CAI, Headers, Pulleys, Jams, titanium retainers and valve springs...