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IWSTI Forums

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STI related videos. Please post non-sti videos in non-sti video subforum.
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Subaru BRZ STI

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IWSTI Engine & Drivetrain

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2.0 Liter Direct Injection Factory Motor

New for the 2015 WRX, this motor is expected to make its way to the STI in the near future but we don't yet have any official word from Subaru on this. Stay tuned!
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2015+ STI Discussion Forum

STI Prices, Rates, Ordering, Options Discussions

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2015+ Member Journals

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2015+ STI Discussion

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GR Series STi Discussion (2008+)

GR-Members' Journals

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GD Series STi Discussion (2003/4-2007)

GD-Members' Journals

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GD-General

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Vendor Member Section Want to Grow Your Business? Learn more about becoming a Supporting or Premium Vendor

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Suma Performance

Premium Convex Performance Mirrors and Car Detailing Products
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CARiD.com

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COBB Tuning

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Diode Dynamics

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REXPEED

New Products news for your vehicle from REXPEED. Feel free to contact us if you have any questions.
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Regional Forums

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Other Regions

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Latest Posts See all new posts
  1. Hey friends! What is everyone's go-to and bang-for-the-buck bushings and braces that would yield a neutral to mildly oversteer car on our '15+ chassis? Main Purpose of Car: Spirited Canon Driving & AutoX ~2x a year. Current Impressions of suspension setup: Still understeers (albeit less than...
      0 replies   0 views
  2. Hello. I just bought a 2015 STI with the Cobb catted downpipe and SF intake. There are no fuel system upgrades. I was told the car has a stage 2 Cobb ots map. I read online that Cobb used to offer this map for this same setup however discontinued it. I spoke with Cobb today and they say that...
      26 replies   752 views
  3. I joined this forum to learn and read. I recently bought a 2013 Subaru WRX STI Sedan USDM. Previous Vehicles 2000 Oldsmobile intrigue 1996 Yamaha FZR 600cc 2000 Mustang coupe 2006 VW Jetta TDI 2016 Ford F150 2006 VW Jetta TDI 2010 Subaru Legacy 2015 Ducati Monster Stripe 821cc The Purchase I...
      96 replies   9K views
  4. Disclaimer: I have no sponsorships or financial ties to IAG or any other companies listed in my journal. I am a hard-working, private owner of this vehicle and its modifications. Milltek exhaust 5/2019 My feedback on this project: NASIOC - View Single Post - IAG Performance (merged...
      3K replies   704K views
  5. Crest CNC is actively working on their own proprietary castings. That includes a short block too. Visit their Facebook page for more info. Chris Smith stated in a podcast with HP Academy it will cost roughly half of what their current billet offering is listed for. Their primary market are...
      9 replies   301 views
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