Engine/Power - EJ20T (pre-2006 WRX and JDM) There is replacement for displacement, it is forced induction - OEM 2.0 liter turbo engines in the USDM WRX. 90-94 Legacy Turbo EJ22 turbo engines can also be discussed here.

Maximum Boost Question

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Old Sep 21, 2005 | 08:31 AM
  #1  
sylencce's Avatar
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From: Delaware
Car Info: 04' WRX Silver Scooby
Maximum Boost Question

Does anyone know what the max boost is on an 04 WRX? Or has anyone used a manual boost controller with the stock turbo on an 04 WRX and what were you able to push it to???
Old Sep 21, 2005 | 09:14 AM
  #2  
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Car Info: 03 MBP WRX
stock max boost is about 13.5 psi. You can push maybe an extra 1~1.5 psi safely with a mbc, but it is not recommended. The best way to make more boost is with a reflash or engine management like the UTEC or Xede.
Old Sep 21, 2005 | 10:42 AM
  #3  
sylencce's Avatar
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From: Delaware
Car Info: 04' WRX Silver Scooby
Do you know who's turbo it is Subaru uses in the 04 WRX?
Old Sep 21, 2005 | 01:47 PM
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Car Info: 03 MBP WRX
mitsubishi td04
Old Sep 28, 2005 | 04:45 PM
  #5  
Donkey's Avatar
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Car Info: 02' WRX
TDO4H-13T on the WRX runs out of steam at about 17psi.I run a Cobb stage ll that is mapped to push 16.5 psi on the stock turbo.
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