I have heard 80-100 HP over stock.
I have my Smarty Jr turned up the the 100 HP level, which has been said to be like 112 HP (and 200 ft lb TQ) without any issues.
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'04 Ram QC 3500 SRW LB 4WD; 305/555 HO CTD, LT315s, H2s, Fabtech 4.5", 2.25" Dirt Logics, MBRP 5" Straight Pipe Exhaust, AFE Bladerunner, IceBox Intake, Cool Hose....SMARTY JR