Searched...and i think im the only one that isnt familiar with the residual valve. I was told and read that im to get rid of them to help my brakes. Ive got a 74' fj40 that I put a 78' disc in the front of and want alittle more pedal. Does this help..and how exactly do i do this? Do i remove front and rear pressure valves or is there only one for the front? Fixin to add an extended brakeline to the rear and need to bleed brakes anyway.