Did they check the spark plug wire resistance, or have you previously replaced them? Most of the 05 wires are about 3 ft. long and, when in good condition, should have ~12000-20000 ohms resistance, end to end. Maximum resistance should be no more than ~10000 ohms per foot. Give some consideration to Taylor Shorty wires, if you need to replace them. I've had them on my 05 Hemi LX for about 6-7 years now and, IMO, they're great.
06 GCO, Dk Khaki, QDII, Flshing Hi 3rd Bk Lt, MDS "ON" Lt, Airtab Vortex Gens, Debadged, Fumoto Drain Valve, BT Catch Can, Chopped EGR Tube, SRT8 CAI, K&N Filter, Sonnax Trans Line Press Booster, SC Tuner W/Adv Trans Tune App, DS Tuner, Cust tubular hdrs w/3 in Magnaflow/Xlerator AP Exh Sys, Bilsteins, SRT Springs/Sways, Cust Eng Cvr, SRT8 frt/rear bumpers, FRI Sidewinder Cam/6.1 valvetrain, SLP 25% UD Pulley, BBK true 90mm T-Body, SOS Ign Coils w/.060 spark plug gaps, SRT Reps with 265/45&295/40X20's.