Thread: 06 wrx w/vf39
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Old 08-08-2007, 08:48 PM   #5
Hazmat
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Member#: 94803
Join Date: Aug 2005
Location: AZ HEAT FTW
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I search in many threads but found no real hard evidence that it will gain a significant amount of power going from HKS to bellmouth. I might consider it later.
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