ok, i have a 10 psi pulley sitting on my counter and its killing me. now my silverado is running 9psi, on stock injectors, with the boost pump raising the fuel pressure, and FMU regulating. my wideband is showing perfect air to fuel ratios right up to redline. now heres the thing, i am putting a bung on the sub tomorrow so i can switch my wideband back and forth between the two trucks. if i put my 28lb injectors back in and get a new tune will i be able to run 9-10 psi as long as i watch my a/f ratios. or do i need a pump and FMU. i think if i keep an eye on things and keep my meth working for safety.