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  1. Diff's Hot, Take it Easy - Rear Differential Cooler R&D, Part 3: Track Prep

    Diff's Hot, Take it Easy - Rear Differential Cooler R&D, Part 3: Track Prep

    When you're hurtling towards a concrete-walled turn at over 90 MPH, you'd better know that every nut and bolt in your car is torqued to spec.


    Photo: Nick Thomas

    We've all had to prepare for something before"a date, an interview, a test. It's always a stressful experience. Now imagine you were about to go on a date with somebody you were pretty sure is trying to kill you. Or, imagine that your desk would be pushed off a 100ft cliff if you failed that test. Preparing for a track day is a lot like that.

    _MG_4004

    About a week before our Focus RS

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  2. Mishimoto 2015 Subaru WRX Performance Aluminum Radiator, Part 4: Prototype Radiator Performance Testing and Project Completion

    Mishimoto 2015 Subaru WRX Performance Aluminum Radiator, Part 4: Prototype Radiator Performance Testing and Project Completion

    Interested in purchasing our 2015 WRX aluminum radiator? Check out our product page for more information!

    Mishimoto Subaru WRX Performance Aluminum Radiator

    Now that we had a finalized prototype, it was time to test this component to ensure that our improvements over the stock unit resulted in real-world advantages for our customers. An aluminum radiator provides the instantaneous benefit of increased reliability over the stock plastic unit. Despite this, cooling performance is always our primary goal with a heat exchanger.

    Prior to actual road testing, our engineering team put together a few charts illustrating the improvements over the stock radiator.

    Comparison of coolant</body> " width="300" height="174">
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  3. Mishimoto 2015 Subaru WRX Performance Aluminum Radiator, Part 3: Second Prototype Evaluation

    Mishimoto 2015 Subaru WRX Performance Aluminum Radiator, Part 3: Second Prototype Evaluation

    Interested in purchasing our 2015 WRX aluminum radiator? Check out our product page for more information!

    Mishimoto Subaru WRX Performance Aluminum Radiator

    No need for an introduction, let's check out our second prototype!

    Mishimoto prototype 2 radiator
    Mishimoto prototype 2 radiator

    Mishimoto prototype 2 radiator
    Mishimoto prototype 2 radiator

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  4. Mishimoto 2015 Subaru WRX Performance Aluminum Radiator, Part 2: Evaluation of First Prototype Radiator

    Mishimoto 2015 Subaru WRX Performance Aluminum Radiator, Part 2: Evaluation of First Prototype Radiator

    Interested in purchasing our 2015 WRX aluminum radiator? Check out our product page for more information!

    Mishimoto Subaru WRX Performance Aluminum Radiator

    Now that we had our first prototype unit in, it was time to evaluate fitment and determine if any changes were necessary when compared to the stock unit. First, we swapped the shrouds to see if any fitment issues existed because of the added size of the Mishimoto unit.

    Mishimoto prototype 1 (right) fan shroud fitment
    Mishimoto prototype 1 (right) fan shroud fitment

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  5. Mishimoto 2015 Subaru WRX Performance Aluminum Radiator, Part 1: Product Introduction and Stock Radiator Overview

    Mishimoto 2015 Subaru WRX Performance Aluminum Radiator, Part 1: Product Introduction and Stock Radiator Overview

    Interested in purchasing our 2015 WRX aluminum radiator? Check out our product page for more information!

    Mishimoto Subaru WRX Performance Aluminum Radiator

    The new 2015 WRX is a great toy for both daily use and as a weekend track warrior. The introduction of the FA20DIT into the WRX chassis has been well received, and from the reviews thus far, Subaru has done a great job with the new model. Although some might disagree with the styling, overall the car handles and performs very well. As for value, the 2015 model is a pretty decent bang for your buck. For those looking to track their brand new vehicle, a few bolt-on modifications will raise power levels significantly. A simple intake and tune will raise power to 275+ whp, which is a huge increase over the 210 whp we saw from a completely stock vehicle. Reaching 300 whp is potentially obtainable with a few additional exhaust modifications. We are

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