Engine/Power - EJ20T (pre-2006 WRX and JDM) There is replacement for displacement, it is forced induction - OEM 2.0 liter turbo engines in the USDM WRX. 90-94 Legacy Turbo EJ22 turbo engines can also be discussed here.

DP help

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Old Dec 3, 2004 | 08:44 PM
  #1  
Grey16's Avatar
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Joined: Apr 2004
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From: Surprise AZ
Car Info: 02' WRX wagon
DP help

Trying to figure out what to get a bell mouth or divorced DP. I was looking at the Stromung DP, and the bell mouth one I can't remeber the name of who makes it. Is there are power gain difference between the 2 styles? What do you guys recommend. My cat back exh is the HKS hyper. And also I want to be able to keep my third cat. Thanks for the help in advance.

Bryan
Old Dec 3, 2004 | 09:12 PM
  #2  
Impreza_WRX_STi's Avatar
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From: Ottawa Il
Car Info: www.autoquoteresearch.com -- 02WRX
between the both there won't be a big difference. with stock turbo you won't get much either, but when you upgrade the turb a divorced/bellmouth will help, but between the both their differences will be relatively similar.

..max
Old Dec 3, 2004 | 09:30 PM
  #3  
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From: How do you swap an RSTi?
Car Info: 2001 Impreza 2.5RS(Ti)
^^^ I have to disagree with that.

A dp will definitely make a noticeable difference. I would say that it's not likely that you'll notice a difference between the divorced and the bellmouth.

I'd go with a bellmouth. The air coming out of the turbo is turbulent anyway so why separate them. Just let it settle into laminar flow all at once. My 2cents.
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