For the chisel mod it makes me go faster on concrete and I don’t know how to fix it,

Pretty sure that's intentional.

Check the config file. In the version I have in front of me, it looks like this.

    # The factor that concrete_white increases your velocity. Default is 1.35, set to 1 for no change.
    D:concreteVelocityMult=1.35

its literally a feature and is awesome. your a god damn psychopath if u turn it off