MBC vent hole

[w8lifter21]

Is it critical that there be a hold on the MBC for air to escape? I will be using a low pressure air regulator and it doesn't have a hole. If I really should have that hole, does it have to be on the MBC? Meaning can I use a hose coupling with a hole drilled in the side right after the MBC? If you couldn't tell, i'm going for extreme budget build, yet still be reliable

 

[oldman]

That all depend on the design of this "low pressure regulator", if it allows air to flow backward then "no", you don't need a bleeder hole.