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 11-08-2006, 11:10 PM
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Join Date: Jan 2004
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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
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Old 11-09-2006, 09:17 PM
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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.
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Old 11-10-2006, 07:23 AM
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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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