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Discussion Starter · #1 ·
which way is the hyperboost valve louder? I've heard that if you put it in backwards, it will make a louder sound, can anyone confirm this?
 

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bump, I trying to figure out if its best to put it like stock or with the piston face down to the delivery pipe
 

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i ended up just calling them, the said, leave it like stock, then try switching it, the said piston down would be more prone to boost leak than the stock way, so I left mine as is and it turns out my old unit was falty or the spring was 2 weak the new valve seems to have elimated the surge for the most part.
 
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