pulling to one side when breaking hard
 

this may be a dumb question but i figured i would ask here before i spend any money trying to fix it.. a few months ago i had a locked up caliper so long story short i replaced the caliper and rotor on the right side and pads on both sides... do you think its just because everything is new on the right side so its pulling to the right? its not a violent pull just slightly pulls to the right ..should i just replace caliper and rotor on the left and it would even out? thanks in advance

yes and yes.
if you have a braking pull it isn't just from the pads, as you now know replacing one caliper can cause a pull, I always recommend if you are going to replace a caliper or a rotor that you replace both.
now you have one rotor that is thinner than the other and one caliper that is stiffer than the other. So one side grabs better than the other and one side gets hotter and fades out faster than the other (the one with the thinner rotor).

Make sure you have bleed all the air out. Caliper replacement often requires a bit of extra bleeding.

Air in the brakes almost never causes a pull, there would also have to be a restriction in one brake hose otherwise you would just get a spongy pedal and poor braking all around.

ok thanks im gonna get the other side replaced as well, I really appreciate the help