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Discussion Starter · #1 ·
My HKS bov sounds different from stock twins to single. With the stock turbos the bov whistled like usual, now with the single it kind of has this flutter sound instead of the whistle. Is this because of the external wastegate?
 

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Discussion Starter · #5 ·
USFmk4 said:
Every ssqv i've heard on a big single car had the fluttering sound, havn't heard it on a stock twin car though.

Yes, thats how mine sounds. At first you think it's surge but it's not, it whistles at full throttle though. I just wanted to make sure this was normal for SSQ owners. I personally think it's because of the open WG on the other end.
 
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