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I have some questions about Cobb AP before I decide to buy one. First, if I buy a used Cobb AP and the owner never "unmarried" their unit, would it render the unit I bought useless? Does Cobb offer a wastegate fix for the wastegate rattle? And if I get my Cobb protuned and then go back to stock for a dealer visit, would the pro tune still be on there? Thanks for any responses!
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