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What intakes fit VF4s the best?


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I want to keep the crossover. Maybe its just being anal-retarded about things, but I think it helps buffer the intake pulses and aids in keeping the airflow across the jets more consistant at lower RPMs. Also, I set the cylinders up individually, and the adaptors I made for my sync gauge fit real nice in those ports with the crossover removed.

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Anybody remember the days of "Roost Boost" and the Yamaha "Energy Induction". I was surprised to see a stock "boost bottle" on a newer Rotax 600 when I helped rebuild some carbs last winter. Seems like its more than just an aftermarket gimmick if OEMs are doing it.

Granted, it won't really do anything if you run WOT all the time.

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My 35 PWK'S never hit with UPP's

Neither do my Mikuni 41's

 

It's the billet intakes that are the problem.

 

Get the UPP.

Agreed, next intakes I buy will be upp's. Imo the wicked motorsports intakes are probably as good as it gets when it comes to billet.
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