Originally Posted by
waldig
You will go lean as 20# reduces the NET EFFECTIVE FUEL PRESSURE so youll go lean. need to have a compensated regulator to work, see NEEDSWINGS for assistance. I have and designed as compensated boost control for the fuel regularor. Its Physics but simple. Enjoy Woody

only with regulator i can run 5 bar fuel pressure with stock pump?i can fit s55k cl55k fuel pump maby it has inner 5 bar regulator?