I believe this shop specializes in Audi, Porsche, and Volkswagen. You'd be best off to call and speak to one of the guys there.
Richard, we can't tune your Stinger here. If you have an off the shelf solution (which we've installed on Stingers in the past) I can do that for you, but if you're looking for a dyno tune I'd check out Modified by KC or Revline.
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