i have this cluch in a non-modular configuration with a fidanza flywheel. i've put about 700 miles on it and it still doesn't feel 100% broken in yet, for example sometimes it will slip at 15+ psi, sometimes it will grab. it seems to depend on the alingment of the planets.
the pedal will feel VERY light for the first 300-500 miles or so. it will feel almost like there is no cluch fluid in the lines. eventually the spring things inside of the clutch will stiffen up to the firmness level of the stock clutch. it will not get any firmer.