HI guys - I'm a new owner of 2002 S2000. Installed Supercharger this summer and it was a blast! After a while, I noticed that my clutch pressure will start fine then becomes very soft when Vtech hits then it will be normal again. Here's what I've done so far:
Change Clutch master cylinder - very dark fluid
Change to braided line
Change slave cylinder
Bleed it many times...

Clutch is competition stage 1 with lightened flywheel and still holding strong just loosing pressure.

What could this be?

 

Anyone have idea what this might be?