Bananaz, my personal experience is similar to yours. Pedal never went to the floor before I started bleeding the system. I'm pretty sure it was just the master. I replaced the CSC with the Z1 CSCEK as a preventative measure. The OEM CSC seemed to be in ok shape upon removal.
I would try just the CMC first (if the downtime is an option). I recommend you bench bleed the CMC when you install it. If you do replace the CSC, be sure you replace the CMC also.
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2011 370Z 6MT Sport Gun Metallic | ARC | CJM | Ecutek | FI | Fujimura | R2C | SPL | Stillen | TWM | Z1 | ZSpeed | |