Are KO4 Turbos the best choice?
**Help me Reach 5000 Subscribers by August!!** Subscribe today to join the Boost Book Automotive Community! Follow me on Instagram for Behind the Scenes! @boost_book https://www.instagram.com/boost_book/... The Borg Warner KO4 Turbos are a well known and reputable turbo choice when going stage 3. Today we talk about the KO4 turbos and what makes them such a great choice for your B5 S4!
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