I am always very skeptical of actual EGT reductions on cold air intakes. The reason is that the stock setup runs very cool, the most I have ever seen above ambient (in the manifold) is 45*, and that was sustained 32 psi boost, towing up a 7* grade, a/c on, 95* out. The rest of the time its about +30* max, and normal cruise is about 10-15* above ambient (the mods I have done brought that down to 6-12* above ambient).
Several independent testers have found for every deg of reduction of intake air you get about 1. 5* reduction in EGTs (same works for a rise). So if you take +45* over stock and drop it the full 45* (which is impossible) you will see only 67* reduction in EGT's, but at WOT and full boost I would be surprised if you got a 20* reduction over stock, which is only a 30* EGT drop which is very hard to quantify.
I feel the same about intercoolers, if you not flowing at least 50% more air than stock your really won't see much of a decrease as stock is very efficient. Now if you have a open air intake that pulls hot enigne bay air then a CAI will make a big difference, or an intercooler. . But going from stock with about 100hp over stock I don't think the results will be noticeable on most trucks.
This is the reason I did the mods I did to my intake, and not a CAI. The parts I replaced were the OEM choke points designed to reduce noise and reduce install time.