Helix Up-Pipe
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Joined: Dec 2005
Posts: 130
From: Springfield, VA
Car Info: 2004 wrx
Helix Up-Pipe
Would everyone know the inner diameter of the their Uppipe?...like TXS claim their inner diameter is roughy around 45mm to match up with the stock inner exhaust housin of the oe turbo. Thanks alot
Thread Starter
Registered User
iTrader: (1)
Joined: Dec 2005
Posts: 130
From: Springfield, VA
Car Info: 2004 wrx
The helix Uppipe pipping diameters are 2.25" and i understand that it yields(max) around 15+WHP with a upgraded turbo, now how would it performance with a oe turbo with its much smaller roughtly 45mm(1.77") exhaust inlet, won't there be quiet some tubanlence?
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