I just replaced my rotors with brembo slotted rotors and axxis ceramic pads. The problem is that my car wont stop 25mph+ safely. Please dont joke about this, its extremly dangerous. Everything was installed right, and brakes wur all bleed ( ive done plenty of brake jobs) but with this set up, when pressing on brake pedal, the pedal goes all the way down.
My first trouble shoot was a stuck caliper piston, but when i pressed on the brakes on the lift it works and wheels lock up. Does anyone know if rubber hoses have to be replaced with steel brake lines in order for this set up to work?

 

Btw there are no leaks and master cylinder is full

 

Try bleeding again and double check the connections of all the calipers/lines

 

You have air in the lines. You probably got a full bleed, turned the car on, then the ABS/EBFD pump huffed a bunch of air into the lines. Mine did the same thing when I bled them last week. After bleeding them again, I got at least half a pint more brake fluid in.

And people say we don't need a powerbleeder. Psh.

 

I thought using the power bleeder was the way to go on ABS systems?

 

Damn, I should have looked for the sarcasm smiley. Yes, I think we absolutely need a powerbleeder.

 

jus wait till they perfect it, and mabe they come out wit brembo BBk