Soft Brake Pedal

[rattytat]

All

i have 930 calipers fitted to a competition car. Balance pedal box fitted so able to balance between front and rear brakes. Two separate circuits (front and rear) and racing brake fluid, brakes bled several times - no air in the system and no fluid leaks. Brake pedal goes well down and is soft - pedal effort doesn’t change even when pumped…. Nothing like the brakes on the road going 930. What am I missing - any thoughts?? Thanks, Dave

[H-viken]

Newly assembled system? My guess is there’s still air trapped in the master cylinder

Pedal can be soft until the pistons extend enough to where the pads hit the rotors, but a few pumps and that goes away