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but i bet this one is louder ;D
 

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A little BOV info. :)

That "pop" sound you hear is most likely extra fuel burning in your exhaust/cat due to your car running too rich. This may be accompanied by some bucking or hesitation. Unfortunately, in most cases a "little" tuning can not really fix this rich condition.
 

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you're not suppose to change the stock bov unless you are boosting higher than normal psi. it'll eventually jack up your air/fuel ratio..
 
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