as mr mopar said depends on which compressor , get a compressor with a 100 % duty cycle . delay dont really depend on the compressor it depends on the size of line ,tank,and weight. think of it as a straw vs a garden hose , 1/4 air line will only flow so much cfm vs 1/2 line . i dont like "fastbags " because they are harder to hit that sweet spot of the deminision when the bags rides correct .