master cylinder brace
I had some improvement with a similar brace on my Forester. So I tried this one on my wife's WRX, and WOW! Excellent, linear, progressive braking now. Big improvement! Now admittedly, this was also done with fresh brake fluid, new Hawk hp5.0 pads, and new rotors, so other factors likely helping also. Now this car has a better brake feel than even my old BMW M5.