Hey everyone, I'm having problems running rich with my 91 coupe. It's a 347 eagle stroker kit, Port and polished heads, Upgraded valve springs, Stock upper and lower, Crane cam 529 lift, Headers, Exhaust, ect. For some reason it's running rich and fowling spark plugs every now and then. It has a T-rex fuel pump also and stock 19# injectors with stock fuel regulator. I bought a adjustable fuel pressure regulator from BBK a week ago and i'm wanting to put that on soon. My question is, Would the stock regulator be my problem that im running rich? When i put the BBK regulator on what should i set the PSI to? Would i turn the PSI up or down? And why is it running rich? Any help would be great and thankfull!