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

Divorced Wastgate DP and Boostcreep

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Old Nov 8, 2006 | 11:10 PM
  #1  
debbid's Avatar
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Joined: Jan 2004
Posts: 1,197
From: San Jose, CA
Car Info: 02 WRX Wagon, 14 Forester XT, 96 Miata
Divorced Wastgate DP and Boostcreep

I used to have an 04 WRX with a catless bellmouth downpipe, catless uppipe, and stock catback. I never had any problems with boostcreep. Now, i have a 07 WRX and i recently ordered a divorced wastegate, catless downpipe. I read in another thread that boostcreep has something to do with the bellmouth design. Is that true or should i be ok with my new dp and stock catback?

thanks,
david
Old Nov 9, 2006 | 09:17 PM
  #2  
quiksilver's Avatar
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Joined: Oct 2005
Posts: 7
From: Carbondale, PA
Car Info: 2006 Subaru WRX
I have am Invidia v3 divorced dp and a custom catback. I have problems with boost creep only when it is cold out. 30 degrees and below. I never have any boost creep when it is warmer than that.
Old Nov 10, 2006 | 07:23 AM
  #3  
testes1010's Avatar
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Joined: Oct 2003
Posts: 297
From: Evansville, IN
Car Info: 2003 Subaru WRX Aspen White
w/ the stock catback you should be fine....but if you go completely catless w/ aftermarket catback I can almost guarantee you boost creep...
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