boost meter got function one la bro.....it let u see ur car vacuum when u start engine.....so when u speed....it let u see ur car turbo boost level.....if ur car standard turbo engine u can drive without a boost meter...
but if u got mods d engine or turbo.....u need boost meter to see whether ur car is running at lower boost....standard boost or overboost.....if lower boost then car no powerr..........overboost is damn kuat d engine so engine will keBoom.....LEtuP. so tat is d function of boost meter...to see ur turbine performance :lol: