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#10: 11-27-2012, 12:04 PM
StoplightAssassin's Avatar
Title: That's unpossible!
Rank: Donating Member
Car: 2012 Hammerhead-i Eagle Thrust
Posts: 8,682
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Just buy an aftermarket up. A gutted up still won't flow as well as a aftermarket up. Even the STi catless up doesn't flow as well as an aftermarket up.