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Anyone tried the JB4 on their S3?

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I installed the JB4 on my 2016 A3 a few weeks ago. Amazing upgrade, has multiple maps ranging from no mod to custom. George is great tuning the custom map to your situation. Turbo lag minimized and great mid and higher RPM performance. I highly recommend it as the best $/hp add on.

Not all features work yet for Audi/VW, but they say they are working on it.


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