[GTSLOW]

Originally Posted by Alpha1BC

What you described definitely sounds like air in the system. Having pads that aren't burnished or having old vs. new pads would still have a firm pedal feel and stop the vehicle from normal speeds without issue. If it was a leak allowing the pedal to go to the floor and not air, you'd get a low brake fluid light pretty quickly.

Something I've seen with switching to the Brembos, especially if it's a shop or person that hasn't worked with big fixed calipers like these before, is missing that there are 2 bleed screws per caliper. The inboard one isn't obvious just from looking at the outboard side of the caliper. I know of at least 2 people personally that have missed this when bleeding these brake kits, so I have the feeling it's not that uncommon for even shops to sometimes miss. I'd suggest starting there.

If that doesn't do it, next thing I'd try is bleeding the master cylinder and/or triggering the ABS module (either by a hard stop on a dirt road or with a service tool) then re-bleeding the whole system normally.

Spot on!

It almost feels like this "shop" used the pads as a cop out as to why the pedal is soft. Put the pads aside, you should NEVER have to put the pedal all the way to the floor to hard stop. Hell the pedal should never go completely to the floor during normal use anyways.