SpooksRex Posted July 16, 2012 Share Posted July 16, 2012 I just bought an 05 STI Master cylinder and booster to do the brake upgrade + a grimmspeed MC brace to see if that helps with my spongeyness. I just got my STI MC in the mail, and it looks like it was leaking fluid between the MC & the booster. Should I be concerned of a larger issue at hand, or should I just replace the seal? Once I install this, I was going to do a brake flush also since I just put in Hawk HPS's & Powerslot rotors all around. Any info would greatly appreciated. I'm planning on doing the install on Friday, so when I go to the dealership this week to pickup the check-valvle line for the STI MC, I didn't know if I should pick up anything else. -Dan Link to comment Share on other sites More sharing options...
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