I havent been able to find a consolidated list of unichip tuners anywhere. The APS website lists their dealers, but most of them just sell the kit, they cant actually tune the Unichip software. So far, here is what Im tracking:

GRD, Naperville, IL
ZCarGarage, LA
Brainstorm, LA
Scotts Performance, Santa Clara, CA
Dynocomp, Scottsdale, AZ
Japtrix, Lake Worth, FL

Is there anyone else out there that:
-is an authorized Unichip tuner
-has a load based dyno