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Turbo-Charged 2.0L Engine

The Factory 2.0L Turbo Powertrain forum is for technical discussion about all 2.0L FACTORY TURBOCHARGED WRX MODELS. Discussion will include powertrain parts & problems both stock and aftermarket.
12 4.2K
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  • 4.2K

Turbo-Charged 2.5L Engine

The Factory 2.5L Turbo Powertrain forum is for technical discussion about all 2.5L FACTORY TURBOCHARGED WRX MODELS. Discussion will include powertrain parts & problems both stock and aftermarket.
11 3.7K
  • 11
  • 3.7K

Inhalation and Exhalation

Intercoolers, Intakes, exhaust, headers, cat convertors, all here. Anything to do with the air in, and out of the engine.
12.1K 2.2M
  • 12.1K
  • 2.2M

Naturally Aspirated

Forced induction isn't the only way to go. There's still the NA route for Impreza owners. Talk all about how to go faster, the NA way.
1.1K 194K
  • 1.1K
  • 194K

Tuning Fork

If only it was as easy as using a tuning fork. A board for all the tuning questions. Tuning of the 3rd Generation Impreza. Open source, piggy back, standalone ECUs.. All in here.
9K 1.5M
  • 9K
  • 1.5M

Turbos and Nitrous

Forced induction. TD04, TD05, NEX NOS, anything to make you go faster. Including anything that works with the turbo ie. BOV and Intercooler. Not only for WRX owners. Subaru Impreza owners welcomed.
7.1K 1.3M
  • 7.1K
  • 1.3M

Drivetrain, Transmission and Gear Box

Upgrading your gear box and transmissions to support your performance upgrades!
3.1K 822K
  • 3.1K
  • 822K

Engine Internals

Pistons, Crankshafts, Cylinder Heads & Valves, Rods & Pulleys. All the stuff to make you fast. Faster.
1.3K 280K
  • 1.3K
  • 280K

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