-6 off each pump to -8 to the rail and a -6 return last year. The fuel pumps weren't happy with the pressure/flow.

As I said, this year with reduced base pressure and more injector, I have plenty of fuel so far.

 

E98, 2150's, 910hp, pressures was 4 psi higher @ 47psi, my bad, but injector duty was low 90's. So yes it is very doable. The key is making sure your pressure at the rail is not dropping. This was with a fuel cell and fuelab external pump and regulator, 8an feed line. Pressure (boost + base) was rock steady even at max boost. FYI if your running the stock Evo fuel rail you need to drill it out just behind the AN adapter fitting.

 

https://www.evolutionm.net/forums/ev...tang-dyno.html

Look at post #13
43.5 base pressure, 830hp (mustang dyno), E85, duty cycle in the low 70's. Dual 044's.

If you need 8 injectors to make over 900hp your fuel pressure is dropping period.

 

6870 ftw