Quick question about AEM Meth kit
 

I posted this in the water/alcohol injection section but it seem not much people frequent there so I hope it can get answered here:
when I'm doing the test function on the meth kit, with the check valve inline and the nozzle connected, the pump turns on and everything but it sounds like its pulsing rather than becoming progressive. The led stays solid green so I know there's no error. When I take the hose out of the nozzle (still going through the check valve) it starts slow and progressively builds up to hard like the manual says it should.
Is it suppose to behave like that going through the nozzle?

I just emailed AEM also but they have'nt replied as yet
Anyone with AEM meth done the test??

never mind I called AEM and they said it was normal behavior. He said that because of the restriction the nozzle presents in the flow, and the fact that the pump works on a pulse width signal and not a constant signal, it pulses. Which is in contrast as to what the manual says..."The flow will start gradually and increase to a steady amount.":confused: