All I know, is I either floor it, or minimun throttle whenever there are people around. Sounds like garbage. I have tried everything I can, including reinstalling it, nothing seems to work. I think its the filter.
My short ram used to do that also until I found out the metal was rubbing up against something. So I tried to move the hoses around, tightened the rubber that attached to the intake manifold and lubricated any parts that seemed to make a squeek and I have no problems since.
i had a short ram for a time and it never made a whisling sound, everyone thought that it was real deep and throughty. now i have a front mount intake and it still doesnt wistle, just makes tons of noise from the front. try a different intake tube or a ractive heatshielded filter. may help