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Porsche on a lift undergoing service at ECC Tuned ATX, a European and exotic car specialist shop in Round Rock, TX near Austin If you're considering an ECU tune for your BMW, Audi, Mercedes-AMG, or Porsche, there's a good chance one question is holding you back: will this void my warranty? It's the most common question we hear at ECC Tuned ATX, and it deserves a straight answer — not a scare tactic from a dealer trying to talk you out of it, and not a "don't worry about it" f