Boost leak accuracy newb question?

[bob123131]

Just kinda a curious since wwe are always talking about flow ratings etc. For instance everyone sasy a 50 trim tht flows 675cfm is better at 14 psi than a t-25 at 14 psi. How is it that we recreate this same scenario every time we do a boost leak test with an air compressor. Just kinda curious like if the flow has any affect like would a 50 trim at 14 psi in one car with a leak be bigger than a t-25 in the same car?

 

[FORMONTOYA]

10PSI (for example) is 10PSI no matter what. Although it's true that different turbos flow different amounts of air at a given PSI which is totally different.

Air flow and PSI are 2 different animals and airflow has no bearing on a boost leak test, unless the air source (compressor) does not have enough airflow to overcome any leaks. That's why a bicycle pump or cigarette lighter pump does not work for finding leaks.....the air leaks out faster than the pump can put in.

 

[bob123131]

Makes perfect since thanks alot