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Newbie Forum

Beginner/basic WRX tech-related discussions and general WRX questions. Specific questions should be asked in a focused forum below. This forum is for the newbies.
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Bolt-On Tech (EJ205 2.0L '02-05 WRX)

Intake, exhaust, turbos, intercoolers, fuel system, intake manifold, ignition, cooling, etc. For 2002-2005 WRX.
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The Hangout

The non-serious zone. Use this forum for all non-tech and off topic discussions.
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Problem Diagnosis

Need quick help? Troubleshoot the problem here.
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Tuning & Engine Management

ECU mods, stand alone ECUs, UTec, XEDE, TEC, Autronic, wideband, datalogging, etc.
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  1. _THE_ WRX Modification Guide *Complete*

    Newbie Forum
    *** This guide was written in my opinion and I am not responsible for any damages caused by following it, nor am I responsible for any legal repercussions of following this guide. After 10 private messages, 20 instant messages, and many phone calls a day; I have decided to write a modification...
  2. air fuel ratio

    Tuning & Engine Management
    Hey guys... Just want to clarify something... The a/f ratio of the wrx is being maintained at around 14.7 by the stock ecu... So, does that mean even as rpm rises, the a/f ratio is maintained at that level? Or does it get richer as rpm increases??? Thanks!
  3. Ej255 Vs. Ej257??

    Bolt-on Tech(EJ255/EJ257 2.5L 08+ WRX, STi, & GT)
    I have read a lot of conflictiong information on this What are the differences/similarities? Are they both using the same block?
  4. ^ < v forum game

    The Hangout
    I got this game idea from NICO, it is very simple, use ^ < v as arrows to say what you are thinking. I'll start. ^ No one has posted before me < Just bought a 3000GT VR4 rear diff for teh GRM project car v Better be continuing the game
  5. BOV for Beginners

    Newbie Forum
    I am writing this thread in because “Whats a good Blow Off Valve” Is becoming a more and more frequent question. There are threads about Blow off valves and why to avoid them already but they don’t contain the description that I think many new drivers need. In this thread I will attempt to...
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