AU Tuning is good people and they do great work working on cars/installing things. Do yourself a favor and drive down the street to 5150 and get tuned by a professional tuner, not a mechanic...
Is there a designation that professional tuners have as opposed to shops that do tuning as a hobby? Thinking along the line of ASE "Certified" mechanics. How would somebody know the tuner is a professional tuner versus a hobbyist?