How much HP/Boost can internals hold?

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Old 04-02-2003, 12:13 AM
  #7  
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Location: Longing for my ol' white '02 WRX :(
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Whatever is in that picture, if it was sold from a dealership in the US, it wasn't a WRX.

jason
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Old 04-02-2003, 12:41 AM
  #8  
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It is called 2.5RS not RS2.5.

You all need to chill.

However, Steve, There is no way you car makes 315HP with just those mods.

- Alex
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Old 10-24-2004, 11:20 AM
  #11  
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Nobody answered this poor guy's question, everybody's just too busy fighting.

1. It all depends on how hard you use the car and if it's properly tuned. The EJ20 is a pretty strong engine. I'm making 250hp at the wheels @19psi with no problems. You need to upgrade injectors/fuel pump and invest in some sort of engine management if you're going with anything other than the stock turbo.

2. They never made a 2dr WRX in the U.S. 2dr WRX's were produced for Europe and Japan, but only in the GC8 bodystyle (pre-2002.) All 2002-present Imprezas and WRXs are 4 or 5 door, and all American WRXs are 2002-present. So, no USM 2dr WRX. You can turbocharge a 2dr 2.5RS as the EJ25 was built to be a turbocharged engine. It can get sort of expensive, though.
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Old 10-25-2004, 08:00 PM
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I stay at a constand 16.5 psi, right below the fuel cut off. The WRX can handle 18 psi safely but i would not go up much more then that. Our engines are not made like the evo or neon
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