F-BODY Brake upgrade with all new rotors and pads

[sho89mtx 5]

SO had a guy install the f-body brake upgrade and all new rotors and pads on the rear from ZZP and when I got it back, the brake pedal was way too spongy and it's now back with him trying to get fixed and he can't figure it out. The f-body upgrade is suppose to be a huge difference in braking power, and after he installed everything, the brakes were actually much worse, i had to pump them just to stop. That's the last time I use this guy! I had a guy before, but this guy said he could do it much cheaper, apparently he can't!

[Psych0matt 3,300]

My guess is it isn’t bled all the way.