pooperscooper

Does anybody know how much superchips downloader plays with pressure? i have been told they only play with it down low. i have been told it doesnt play with it at all. I was hoping someone on here has a rail pressure gauge that can tell me how much they actually adjust the pressure and where at. Eventually i would like to put the firefly(pressure box) on at the same time as the downloader, i just value my injectors enough to do a little resereach first. That and since i am doing the beta testing i am using it without the downloader to get accurate results.
Thanks