One of the main reasons I am considering EFI is I am sick (literally) of/from inhaling rich exaust fumes. No matter what I do; adjust the carb, change the timing, or both. I still get smogged out. When I drive my car to work I bring my work (monkey) clothes with me so I don't smell it all day. Any help on this one guys? I mean before I shell out the $2500 for EFI. I have an older 650 cfm Edlebrock. Do I rebuild? Buy new? I would rather not spend money on fuel delivery when I am thinking of upgrading. Thanks again!