I have seen plumbers testing pipes.
An engine is an intake pipe connected to an exhaust pipe with interesting bits in between.
A forced induction system should not leak pressure.

Can we test an intake track the way plumbers do; with two plugs and air pressure?

My thought:
Remove throttle body and disconnect the midpipe connection to the exhaust manifold.
Insert the plumbers test plugs on both ends and inflate them, then pressure the "pipe" to about 5 PSI and listen for leaks.

I think any intake leaks would be obvious; but would the test break other things?
Any bad fuel injector grommet or a gasket leak would show.

 

i just did mine and used my air hose connected to the jet air fuel mix hose..i didnt plug the exhaust being i had a second person being able to listen it loses pressure so quickly

 

Find any leaks?