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

intake manifold

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Old Jan 22, 2008 | 07:13 PM
  #1  
Gman's Avatar
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Joined: Jan 2008
Posts: 33
From: Norway
Car Info: 99/04 Forester STI
intake manifold

I've done a few searches in here but I haven't found a thread about this.

Has any one here done this kind of work to their car?

To turn the intake manifold arround 180' wil shorten the overal length of the fmic pipes and you will also get much better airflow to the engine.

Tests has shown that this wil increase the HP considrably.On my set up (se pic),before and after I turned the intake arround,36BHP was gained...

Click on PureRacing gallery,then on PureRacing Forester.

comments ?

http://www.pureracing.no/index.php?o...pose&Itemid=57
Old Feb 12, 2008 | 06:16 AM
  #2  
urabuswgn's Avatar
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Joined: Oct 2004
Posts: 78
From: Pacifica, CA
Car Info: 2004 wrx wagon
reverse intake manifold

the shop that has done this is FineLineImports in santa rosa, ca
or go to there website www.finelineimports.net
there are good power increases from this and less turbo lag from the front mount intercooler. about 2-3 ft less of piping.
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