More Power for 2.5XT Forester

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Old Jul 10, 2003 | 01:24 PM
  #2  
bone324's Avatar
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From: Tucson
Car Info: '02 WRX WRB
The XT is probably too new still. I would call or email Cobb Tuning. They are one of the best tuners for Subarus and I'm sure they could get you started.
Old Jul 10, 2003 | 05:07 PM
  #3  
krillz's Avatar
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From: new york
Car Info: black o2 sedan
i know the auto xt does the 1320 in 13.8 sseconds or so, what does the manual do????
Old Jul 11, 2003 | 01:17 AM
  #6  
kelley's Avatar
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From: portland, oregon
my guess is you ought to be able to run 14-15 psi w/ the stock turbo and maybe a piggyback for driveability. if it is the same spec wrx tdo4 that is. other than that a vf23, 30, or 34 would give it some nice topend. I haven't been able to find out the injector size. but they might be the same sti 550's. so you could run quite a bit of boost with those. they are side feed which means there isn't alot available in us yet. a turbo back would give you nice gains and a header as well. I'm pretty sure most gd imreza exhaust bits should bolt right up.I don't see why 400 would be too tough to obtain with mild bolt ons and 20 psi of boost. I think this will be a nice engine to build. but with a bigger turbo you're not gona have that right now power that it has now. that thing pulls hard down low. it just needs more mid and topend.
Old Jul 21, 2003 | 04:14 PM
  #10  
1fastGC's Avatar
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You can definitely extract more power from your XT by turning up the boost (mbc or ebc). uppipe, 3" turbo-back exhaust system., just to name a few..

Later!
Old Jul 23, 2003 | 05:34 PM
  #12  
1fastGC's Avatar
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Originally posted by Concillian
XTs already have catless uppipes from what I understand. An aftermarket uppipe won't really give too much of an increase.
ah..I didn't know that XTs already have catless uppipe. which is even better! no more busting knuckles and sweat to take uppipe off this time around! haha
Old Aug 18, 2003 | 12:10 AM
  #13  
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Car Info: 1993/2000/2001 GF4 mostly red
The XT also uses a different turbo than the STi. I would treat it as it's own engine and go from there, rather than trying to play catch-up to the USDM STi.
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