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Subaru STi Intercooler 2008-2014

  1. 2008-2014 Subaru STI Performance Top-Mount Intercooler, Part 4: Testing, Data Compilation, and Product Completion

    2008-2014 Subaru STI Performance Top-Mount Intercooler, Part 4: Testing, Data Compilation, and Product Completion

    Interested in purchasing our STI intercooler? Check out our product page for more information!

    Mishmoto Subaru WRX STi Performance Top-Mount Intercooler Kit

    Mishimoto 2010 STI on dyno

    Testing day! After a long ride through development and design, it was finally time to see the fruits of our labor. Before strapping the STI to the dynamometer, we needed to prepare the coolers for testing. This included drilling and tapping the coolers for our temperature and pressure sensors at both the inlet tank and outlet tank.

    Check out a few preparation shots of our stock cooler!

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  2. 2008-2014 Subaru STI Performance Top-Mount Intercooler, Part 3: Prototype and Stock Comparison

    2008-2014 Subaru STI Performance Top-Mount Intercooler, Part 3: Prototype and Stock Comparison

    Interested in purchasing our STI intercooler? Check out our product page for more information!

    Mishmoto Subaru WRX STi Performance Top-Mount Intercooler Kit

    So just how much better is the Mishimoto top-mount intercooler (TMIC) compared to the stock unit? Well " only our testing will confirm this. Physically we can already see several improvements. Let's compare the core size in a simple chart.

    Comparison of core thickness in stock intercooler (left) and Mishimoto TMIC prototype
    Comparison of core thickness in stock intercooler (left) and Mishimoto TMIC prototype


    A look at the bottom of both intercoolers reveals quite a few differences.

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  3. 2008-2014 Subaru STI Performance Top-Mount Intercooler, Part 2: Prototype Introduction and Evaluation

    2008-2014 Subaru STI Performance Top-Mount Intercooler, Part 2: Prototype Introduction and Evaluation

    Interested in purchasing our STI intercooler? Check out our product page for more information!

    Mishmoto Subaru WRX STi Performance Top-Mount Intercooler Kit

    The wait is over! Time to reveal the full details of our prototype top-mount intercooler (TMIC). This unit is unpainted, and one of the more obvious features is its massive size! First, a few overview images of this cooler.

    Mishimoto raw aluminum TMIC prototype
    Mishimoto raw aluminum TMIC prototype

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  4. 2008-2014 Subaru STI Performance Top-Mount Intercooler, Part 1: Product Goals and Initial Design Process

    2008-2014 Subaru STI Performance Top-Mount Intercooler, Part 1: Product Goals and Initial Design Process

    Interested in purchasing our STI intercooler? Check out our product page for more information!

    Mishmoto Subaru WRX STi Performance Top-Mount Intercooler Kit

    Did you think we would just develop a top-mount intercooler (TMIC) for the GD WRX and leave out the STI? No way! At around the same time we began development on the WRX, we picked up a new shop vehicle, a 2010 STI. When a new vehicle makes its way into shop service, we need to be sure it accelerates and handles properly. The STI passed our checkup. We then set out to determine what products we wanted to develop first. We already had a few items on the market, including a performance aluminum radiator and a silicone radiator hose kit. Our first target had been a direct-fit oil cooler that proved to be extremely successful, providing a 20°F drop in oil temperatures during our testing. Next we created a plug-n-play fan shroud with dual 12" electric

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