Ok I've built a motor with holly systemax2 heads, performer rpm intake, cam and everything else, so I just redid my fuel system with a 255lph BBK fuel pump, FMS 24#injectors an adjustable regulator and also added a accufab TB. For some reason it runs lean now. it didn't before acording to my autometer air fuel ratio guage, presure is around 40 psi on autometer fuel pressure guage with vaccume off. What's up? Only leaned out top end before with stock pump and injectors?? Now all the time??