You can look into a tune from Utronic or APR. Lots of other places do them but I would recommend picking one of those two. If you're looking to get your hands dirty I would start by going catless with a test pipe from somewhere like ecs tuning. You could also get rid of the stock intake for a cone filter if you really want to but the effects of that are debatable. I'm guessing if you're asking the question you don't have the know how to do a turbo upgrade but if you have the money you could always have a shop do that for you.
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