It's always difficult when not dealing locally. Unfortunately mail order options sometimes are the best solution and it can be frustrating at times. I'm from Ohio and it sucks because NP doesn't have the 2010 ecm cores yet. If I want a update the truck is going to be down 1.5 week minimum unless I fork out cash for air shipping. Solution to my problem is buy my own extra ecm which also sucks due to the extra cash but the first (local) tuner left me in a rely bad place with my truck almost leaving it non functional after the cam swap. I'm sure they have a lot going on there with as many forum members on here and other sites. They have a pretty good reputation for power are and always being recommend for services. Just think of all the Noobs sending random questions on how much a intake will give them.... They have have to reply to all those emails to earn a potential customers business and still trouble shoot more complex setups or touch ups from current customers. I have somewhat of a similar job so I feel their pain....... Good luck though and hopefully they get you squared away.
2010 Silverado 4.8 Ext Cab 4x4
Cam, Stall, 4.88's