We may need a better description of exactly is or isn't happening. If you are turning the key immediately from OFF to START, the delay could be because the PCM is performing a throttle body motor calibration. This takes about 2 seconds and the starter won't engage until that test is completed since the throttle plate is opened all the way and then closed again. Try turning the key to ON and wait until the fuel pump stops running. Then turn the key to START and see if there is a delay in starter engagement.
2006 Inferno Red SRT8 with groups I, II, Sunroof, K&N drop-in filter, Auto-dim mirror, Jet-180 T-stat, Predator, 300 SRT struts/springs, Chally SRT wheels.
Born 6-21-06, Home 4-26-10. 1/4 mile - 12.989 @ 108.78 in street trim. Traded 10-19-2012.
2006 Inferno Red R/T with R&T Born 8-12-05, Home 8-25-05, Sold 8-9-10.