There is also an upgrade available for the brake pedal, with which they say the pedal not just gets a totally progressive forces, but also that strong force, like in the real race car, however needs some homework to assemble it.... lol
Answer from ECCI i got related to my question to this feature:
For someone who is truly into race car driving the Race Brake kit offers incredible control and realism in braking. The Race Brake kit offers sim racing braking that is as "real world" as it gets. For someone who simply enjoys using racing simulations it could be undesirable due to the high progressivity (very sensitive near the end of travel) and very high pressures required. Installation instructions are at: http://www.ecci.net/instructions/PMB2RaceBrake.htm