thanks for the help i kind of realised that i would need a bigger meter after seeing the psi outcome,

but why did the burnt latke calc say i needed 5" even when i supplied the tank pressure of 90psi

i have a 4" chamber at 19" long iv done the math using the formulas and the burnt latke calculaters and have gotten differnt outcomes when i did the formulas myself it said i would need 143 psi using a 1/2"x5" meter chamber using the calculater and putting 90psi for the supply tank pressure it tells ...