wanted to get peoples thoughts on this and is it needed and or fits on the STi. i also have front and rear sway bars, also by perrin coming.
perrin positive steering response system

 

It is a must for the sti, although it can not be used with the perrin front sway bar. I have the rear sti specific perrin sway bar with the psrs and whiteline steering rack and rear dif bushings and the car handles like a dream.Get the psrs you will love it, and in a couple of months perrin will have an sti specific front sway bar ready that will work with the psrs. The psrs was the best money i spent on the car.