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I have a 93 coupe with a b16a2 swap from a 99 Si. I have a cold air intake and full exhaust, I'm trying to upgrade the fuel system for various reasons. One is that my check engine light is on due to the fuel ratio being jacked. I don't know what the issue is but it runs like hell and stutters at 4k rpm. Once in a while if I get on it it will back fire with a cloud of black smoke and the check engine light will go off and it will run fine for a couple days. Eventually I am putting a turbo on it but I'm trying to figure out what size injectors I should get along with a high flow fuel rail with regulator? Also what else should a upgrade? Any info would be helpful or anyone that has built something similar that was successful. Thanks.