I'm thinking of adding a supercharger this summer to my NA, and a 3rd pair of injectors with a piggy back computer to supply the fuel. (and new fuel pump). I am wondering how much boost I can safely run and what issues I might run into (I'm trying to keep it emissions legal, no visual inspection). At what level of boost will I need an intercooler? I would like to avoid the expense of an FMIC for now.

Thanks,

Eric