I started a thread about dealer options which ended up including some good recommendations for independent VW/Audi shops. You can check it out
here, but the general consensus seems to be that Eurotech in Mahwah and Drive Auto Works in Mountainside are two of the best options. I've personally used Eurotech and highly recommend them. If you just take a look at the pictures of their shop and the cars they work on through social media, you'll probably have a pretty good idea of the work they do. They also have very reasonable rates. Mahwah is about a 40 minute drive from you, but I'd personally consider it to be well worth the drive.
It sounds like others have also used Drive Auto Works and shared good feedback, but I don't have any personal experience with them yet.
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