could be the driver? just joking hahahah

i still find it hard to brake instantly when my ute hits 4-5000 rpm and the engine really opens up to it potential (its like a turbo feeling) secondarys open up she dont stop and with a fair bit of horsies under the bonnet with no booster im scared to push it..

i have a holden comodore barke setup, if i was to put new parts in the brake master rebuild kit will that make any diference?