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Honest thoughts
So I've been around guys that use catch cans and guys that don't in turbo DI daily drivers, track and drift racers. While it doesn't hurt and everything helps, it's not going to prevent blow by. You will still need to do a valve cleaning periodically every 50-75k as routine maintenance. Because of this, my friends that choose not to use a catch can tell me not to bother. Just sharing what I've seen/been told.
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