Engine/Power - EJ25T (STI and 2006+ WRX) Discussions about the USDM 2006+ WRX and WRX STi 2.5 liter turbo flat-four.

What kind of downpipe should i look for?

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Old Dec 20, 2004 | 01:28 PM
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xicema17x's Avatar
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Car Info: 71 rb26 240z
What kind of downpipe should i look for?

Im in the market for a downpipe and i was wondering what kind of quality i should look in a downpipe. I hear that a bellmouth is good to have, but what is the difference between other downpipes with bellmouths?
Old Dec 21, 2004 | 07:03 AM
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Dahveed aka Robin Hood
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From: Robbin' the Hood (Claycord)
Car Info: (RIP) '04 STi Silver
I would recommend one with one high-flow catalyst, and a divorced wastegate if possible, otherwise bellmouth.

bellmouth Vs. divorced debate centers on the theory of WG turbulence.
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