Brake Doctor – Do -02 lines give more pressure than -03 lines?
No – the fitting of the smaller dash 2 hoses sold by some manufacturers makes NO difference to the pressure produced at the caliper as is commonly believed. There are no substantial benefits associated with the use of dash 2 hoses except that the manufacturer can charge you more for them. The only way to increase pressure coming out of the system is to increase the pressure going into the system. 500 psi in equals 500 psi out – fluid cannot be compressed to a lesser volume, no matter how high the pressure and pressure is equal over all surfaces of the containing system.
