I have put STi 4 pot calipers on a 93 Jap WRX, in the hope to improve the braking. Iv fitted EBC disks and red stuff pads and braided hoses but i may as well use my feet to try and stop. I havn't fitted an STi servo, would this help my cause?

 

No. There are a few questions that need answers: How long ago did you fit the discs and pads? Have you bedded them in properly? Do you mean they don't work at all or is it when hot or cold?

 

Disks and pads have been well bedded in (6moinths plus) and all the pistons in the calipers are working fine with no sticking. There is very little in the way of stopping force when hot or cold. They just dont seem to stop the car, my braking distances are massive.

 

i would suggest there is something wrong with your system then......................althought the 4pots aren't the top dog, then you shoould have seen a huge improvement in the braking ability, have you checked and o/hauled the rear also?? maybe they are seized or ineffective??
did you bed the fronts in according to the manufacturer, too hard or light and you could have glazed or cooked pads????