It's a long story NSEX, but Dinan sold their chip business to some guy in Alabama. When I contacted him and told him that I wanted to upgrade from a my original chip to a Stage III he quoted me a pretty outrageous price. Well, I actually talked him down by a few hundred dollars. The first chip came to me in it's own ECU, with my ECU turned in as a core exchange. You see, the OEM chip is soldered in place and they send you a new ECU with their chip unsoldered, for replacement/exchange purposes. I really don't know how much better or worse the Dinan chip is, I just know what I'm making at the rear wheels. Like I say, bragging rights. Good luck with your mods!