Will An In-Line Fuel Pump Help?

[wlingle92lx]

I recently got my car dyno tuned and don't like the very lean A/F ratio. Is was pretty lean N/A but I later found out they had the fuel pressure set at only 40psi. I bumped it up to 45psi just to be a little safer. When I sprayed a 150 shot on the dyno it had a very unsafe 15.2 A/F and ended up making 500 RWHP. I havent sprayed the car since because of fear of blowing it up.

I have no idea what part of the fuel system is maxed out but mabey you guys can tell me what is. I have stock rails, stock lines, 255lph (high pressure) pump, adjustable regulator and 30lb injectors.

If I were to install an in-line fuel pump would this help allow me to spray the car safley. If so, whats a good in-line pump to get? How much should it flow?