Ok I might be purchusing some idlers from someone on this site but what i was wondering was i have the S/C pully on and one idler next to it i will be getting the 2 more idlers and tensior with the addition of the other 2 idlers and ten will i need a tune and i was wondering besides a cog system is there anything else that i can do to get that dental drill sound going??:FIREdevil