I have an Actron Scanner 9150 to read live engine data. I understand most of the abrreviations and I have done several searches here and on google. I even bought a book that gave me little help. I need to know where I can find the meanings of some of the abbreviations and the parameters the readings should be in for my 5.7 TPI. Can anyone point me somewhere? I failed emissions by 46 HC's and as far as I can tell my tool is reading everything where it should be. TIA