I got installed in my GT 03 the cobra front brakes, the 13" rotors plus the calipers.
Well, the brake power is so much better than the stock gt brakes. But i noticed the pedal is kind soft when i step on it. But works really well. Also noticed the pedal kind take 2s to go up all the way. Before was really hard with my old brakes.
Also, when i tried really hard the brakes. I noticed the "brake red light" in the dash board show up for 1s and turned off. What can be?
You still have some air in the system. Bleed the master cyl first then the fronts. Sometimes when you take the lines completly off, you have to bleed bleed bleed and then a little bit more. It would'nt hurt to bleed the rear ones either,just a couple of times.
I just found and used a reverse bleeder. Forces fluid from cylinder to Master cyl (air likes to go up). Fixed a very pesky problem on a fox for me. Let me know if you are interested and I can forward the link.
Between my kids and I, we have three Terminators and two four eye Fox. Torch red 10th, zinc yellow 03, Mystichrome 04 droptop, silver 82GT and blue 86LX. We may soon be adding '11 GT500 for my wife.