Engine/Power - EJ25T (STI and 2006+ WRX) Discussions about the USDM 2006+ WRX and WRX STi 2.5 liter turbo flat-four.
View Poll Results: best twinscroll Kit
Full-Race twinscroll GT35R kit
4
100.00%
Full-Race twinscroll GT40R kit
0
0%
Ultimate-Racing twinscroll GT40R kit
0
0%
Ultimate-Racing twinscroll GT42R kit
0
0%
Multiple Choice Poll. Voters: 4. You may not vote on this poll

which of these Twinscroll kits(daily driving street car)

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Old Dec 12, 2008 | 09:16 PM
  #1  
azn_ryder02's Avatar
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Joined: Jul 2005
Posts: 162
From: Honolulu
Car Info: 2007 Satin White Pearl STi
which of these Twinscroll kits(daily driving street car)

hi everyone looking to built the ultimate street STI will be looking to built motor also

the car will see mostly highway and some auto-x, some drag, and looking to start road racing.

considering a turbo kit as the next step.

Full Race Twinscroll GT35R kit

Full Race Twinscroll GT40R kit

Ultimate Racing twinscroll GT40R kit

Ultimate Racing twinscroll GT42R kit

i know these are large turbos but i spoke geoff at full-race and he assures me that the onset of power of both their kits are instantaneous and the twinscroll GT35R 1.06A/R is great as an auto-x kit.
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Old Dec 12, 2008 | 10:35 PM
  #2  
kmurphy's Avatar
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Joined: Dec 2004
Posts: 970
From: roseville, ca
Car Info: 06 obp sti
I would think the borgwarner 200 series would be a great auto-x turbo. between 30r/35r power but with better response than a single scroll 30r.

I think thats what my next project will be
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