I live near this place and carried in my cummins ecm. 3 weeks later i hadnt heard anything and i saw some of the reviews on the net, so i went back to get my ecm. They claimed to have diagnosed it. But there were no witness marks on any of the screws and even the dirt in the seams wasnt disturbed. And they charged me $150. This place is the same outfit as Car Computer Specialists. They have a couple of people answering phones and thats it. No repair facility. There are piles of ecms. I could easily see that they just get people to send them units, and either hold them until they can squeeze money out of you or send you back a piece of junk.
There are dozens of these outfits operating all over the country. I considered myself lucky to just learn a 150 dollar lesson. Cummins wants 2500 bux for a new one. I am going to buy a guaranteed used one and get cummins to flash it.
Do your homework before you send anything to anybody.