i cut mine at 8psi and didn't feel a thing. by the time it was at 8psi the boost was climbing very quickly probably goes from 8psi to 15psi in 2/10th of a sec. that was a cut of a 150shot and i couldn't feel it at all.

 

If I am not mistaken it is an FJO Controller. I am not 100% sure so don't quote me but I think that is right