I have an 87 mustang gt, has bbk shortys and h pipe, 3.73s, converted to mass air. It idles fine and will run smooth if I baby it but if I try to open it up any then it will bog down real bad, my mass air conversion was just fine for about a month, so I don't think that would be it, I checked all the wires and they seem fine. I have changed the fuel filter, and the spark plugs, I tested the fuel pressure and it's at 32 psi, I hear it's supposed to be at 38. Would 6 psi make that big of a difference or is it something else?
I just don't want to spend money on un needed parts, thanks for any help
I tested the fuel pressure again last night, and it was reading 32, then when I took off the vacuum line from the regulator, it shot up to like 41ish. I remember this meaning that either the pump or the regulator was bad, but I don't remember which
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