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Page 4 - Josh Wayman

  1. An image of a RAM 6.7L Cummins mounted to the Mishimoto dyno.

    Pedigreed Power – Performance Intercooler for 2019+ RAM 6.7L Cummins

    After reading an article in a trade journal claiming the diesel engine would never be successful on the road, Clessie Cummins, founder of Cummins Engine Co., decided to take that statement as a challenge. In a used Packard limousine with a Cummins engine swap, Clessie and his chief engineer departed Indianapolis for the 1930 Automobile Show in New York City. They faced hundreds of miles of rough roads and terrible winter weather but arrived on time and with a fuel cost of just $1.38, only to be barred from entering the show because Cummins hadn’t registered in advance.

    Determined as ever, Cummins rented space across the street from the Automobile Show to showcase his new engineβ€”and it paid off. His engine’s reliability and comparatively low fuel consumption made it a star at the 1930 Automobile Show, despite not even technically being a part of the show. Before long, the robust and torquey appeal of his engine caught the attention of truck operators nationwide. The rest is history.
    Here
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  2. An image of a GMC Sierra 1500 with its hood open in a garage.

    Frosty Freight – Transmission Cooler for 2019+ Chevy Silverado and GMC Sierra 1500

    For truck enthusiasts and professionals alike, ensuring continued performance is crucial. One of the most prominent threats to a truck’s performance is heatβ€”especially when it comes to the transmission. An overheating transmission can cause serious damage, particularly when the truck is working hard while towing or off-roading. That’s why we’ve been hard at work developing our Transmission Cooler for the 2019+ Chevrolet Silverado and GMC Sierra 1500.

    Mitch, our engineer, set out to design a transmission cooler that would outperform stock. He opted for a tube-and-fin core design, which is less prone to develop air pockets as fluid moves through the system and more resistant to pressure drops. Mitch’s direct-fit design was drastically larger than its stock counterpart, boasting these improvements over stock:

    The stock transmission cooler next to a test-fitment Mishimoto prototype.
    The stock transmission cooler next to a test-fitment Mishimoto prototype.
    Type of IncreaseIncrease Percentage
    Core Volume266%
    Frontal Area83%
    Internal Tube Area339%
    External Tube
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  3. An image of a Ford F250 Super-Duty with the grille removed and a Mishimoto transmission cooler installed in front of the radiator.

    Hard Lines, Hard Work – Transmission Cooler for the 2020-2022 Ford 6.7L Powerstroke

    With 475 horsepower and 1,050 ft-lbs routed through a 10-speed 10R140 TorqShift transmission, the 2020-2022 Ford 6.7L Powerstroke was designed for serious towing. With big power comes lots of heat, and this is especially true when hauling heavy loads or towing uphill. As impressive as this truck is, heat is the enemy of any transmission, and as temperatures rise, so do problems.


    The stock transmission cooler does a decent job of cooling, but if you’re looking to push this truck to the limit, decent won’t do. That’s why we’ve been hard at work developing the Mishimoto Transmission Cooler for the 2020-2022 Ford 6.7L Powerstrokeβ€”the first of its kind on the market.

    Stock Evaluation

    The engine bay of a Ford F-250 Super Duty 6.7L Powerstroke with the hood open. Just out of frame there is a blue Ford Mustang to the left and black Ford Mustang GT to the right.

    The stock transmission cooler uses a liquid-to-liquid design. This works by transferring heat from the transmission to the engine coolant. This style of transmission cooler is becoming more commonly equipped by OEMs due to their compact size, but there are pros and cons.

    Typically, liquid-to-liquid transmission

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  4. Hot Hatch, Cool Turbo – Performance Intercooler for the 2023+ Toyota GR Corolla

    Hot Hatch, Cool Turbo – Performance Intercooler for the 2023+ Toyota GR Corolla

    As the Toyota GR Corolla enters its third model year, we’ve been hard at work expanding our lineup of performance products for the rally-inspired machine. The 1.6 liter three-cylinder G16E-GTS engine is the highest power-per-liter output of any Toyota road car engine with each cylinder responsible for 100 horsepower, boasting a total of 300 horsepower out of a remarkably small engine. The engineers at Toyota’s Gazoo Racing Division achieved this feat by pairing the G16E-GTS with a turbocharger capable of 26.3 psi of boost.

    In the blog about our Performance Radiator for the GR Corolla we talked about how important cooling is for one of the most powerful three-cylinder engines in history. The same is true for the GR Corolla’s intercooler system. The turbocharger is a vital part of the GR Corolla’s performance, and when you’re driving the car how it's meant to be drivenβ€”setting lap times at the track, carving up and down mountain roads, or spirited cruising down your favorite backroadβ€”that

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  5. Image of the Mishimoto Performance Transmission Cooler for the 2019+ RAM 6.7L Cummins installed.

    Long Haul – Performance Transmission Cooler for 2019+ RAM 6.7L Cummins

    Picture yourself on the shoulder of the highway. You noticed the gears slipping a few miles back but decided to ignore it because you were only a few miles from home. Those slipping gears turned into violent lurches, and before you knew it, your 2019+ RAM 6.7L Cummins was sporting a Christmas tree dashboard and that dreaded burnt smell. Your transmission is toast.

    But it didn’t have to be this wayβ€”if you had the Mishimoto Performance Transmission Cooler, you’d have made it home.

    A side-by-side image comparing the Mishimoto Transmission Cooler and stock.
    FIgure 1. A side-by-side comparison of the Mishimoto Transmission Cooler and stock.

    Our new transmission cooler for the 2019+ RAM 6.7L Cummins is a direct-fit application that offers improved cooling capabilities and seamless integration into your truck’s transmission system. Our cooler’s core is 64% thicker than stock and uses three additional rows of fins for peak efficiency. To maximize the cooling potential of the enlarged core, our engineers decided to use high-efficiency internal fins that add more cooling

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  6. Image of the Mishimoto Aluminum Coolant Expansion Tank installed in the engine bay of a 2024+ Ford Mustang EcoBoost

    Cool & Collected – Aluminum Coolant Expansion Tank for the 2024+ Ford Mustang

    Every owner of a performance vehicle knows the importance of keeping their car running cool, but not everyone knows where to start when it comes to upgrading their cooling system. For owners of the 2024+ Ford Mustang looking to take the next step in performance and reliability for their car’s cooling system, it’s best to start with the basicsβ€”the coolant expansion tank.

    The stock coolant expansion tank on the 2024+ Ford Mustang leaves a lot to be desired. The plastic construction isn’t just an eyesore, it’s not designed to stand the test of time. After repeated heat cycles the plastic yellows and becomes brittle, leading to a higher risk of cracking and coolant leakage. This risk only increases when the vehicle is driven hard, such as fast laps at the track or hard pulls on the dragstrip.

    An image of the stock coolant reservoir on the 2024 Ford Mustang.
    Figure 1. The stock coolant reservoir on the 2024 Ford Mustang.

    Thankfully, we have a solution for Mustang owners out there.

    The direct-fit Mishimoto Coolant Expansion Tank for the 2024+ Ford Mustang features

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  7. An image of the Mishimoto Performance Transmission Cooler for the 1999-2013 Chevy Silverado and GMC Sierra.

    The Heat is On – Performance Transmission Cooler for 1999-2013 Chevy Silverado & GMC Sierra

    For truck owners who depend on their vehicle for work, reliability and performance are paramount. Whether your truck is a construction fleet vehicle or a dedicated tow rig, one of its greatest enemies is heat β€” especially when it comes to the transmission.

    Transmissions can generate a lot of heat, especially when towing, driving in rough conditions, and off-roading. This becomes more of a problem when they’re paired to a powerful engine, such as those used in GMT800 and GMT900 trucks, which is why we’ve been hard at work developing our Performance Transmission Cooler for the 1999-2013 Chevy Silverado and GMC Sierra.

    The Mishimoto Performance Transmission Cooler for the 1999-2013 Chevrolet Silverado and GMC Sierra.
    Figure 1. The Mishimoto Performance Transmission Cooler for the 1999-2013 Chevrolet Silverado and GMC Sierra.

    Using the same tried-and-true core design as our K2 and Duramax trans coolers, our transmission cooler for the 1993-2013 Chevy Silverado and GMC Sierra boasts a 521% increase in core volume and 278% increase in frontal area compared to stock. The stacked-plate core

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  8. An image of the front grille of a red 2023 Toyota GR Corolla.

    Beat the Heat – Performance Aluminum Radiator for the 2023+ Toyota GR Corolla

    Following the immense success of the rally-inspired GR Yaris overseas, Toyota’s Gazoo Racing division needed an offering for the North American market. After years of workβ€”including delays brought on by Toyota CEO Akio Toyoda, who wasn’t initially satisfied with the prototypeβ€”their result was the Toyota 2023 GR Corolla. Sharing the unique 1.6 liter three-cylinder G16E-GTS engine with the GR Yaris, the GR Corolla puts out an impressive 300 horsepower and 273lb-ft of torque.

    So, what does having one of the most powerful three-cylinder engines in history mean? Well, it means you’re in for a lot of fun. But it also means when you’re driving hard, you’ve got to keep that straight-three engine cool. That’s why we’ve been hard at work developing the aluminum Performance Radiator for the 2023+ Toyota GR Corolla.

    An image of Mishimoto engineers test-fitting a radiator prototype on a red 2023 Toyota GR Corolla.
    Fig. 1 Mishimoto engineers test-fitting our radiator prototype.

    Our engineer, Mitch, started off by ditching the stock radiator’s plastic end tanks for a more reliable aluminum construction.

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  9. A close-up image of a 2017 BMW M2's grille.

    Charge Forth – Performance Charge Pipes for BMW N54 and N55 Engines

    In 2006, BMW introduced a new mass-produced turbocharged engine for the first time in twenty yearsβ€”the N54. Three years later, they released the N55 as a successor to the N54, which offered fuel efficiency and reliability improvements over its predecessor. While the two engines have their differences, at their core they’re both three-liter, turbocharged straight-six engines, both put out over 300 horsepower, and both were used for as the powerplant for numerous BMW models. But they have something else in commonβ€”a weak point.

    An image of a blue 2017 BMW M2.
    Fig 1. A 2017 BMW M2 in our garage for test fitment.

    Stock Evaluation

    Hop onto any BMW forum and search for either engine with the words β€œcharge pipe”. It won’t be long before you find post after post about the charge pipes on these engines cracking and failing, even on stock tunes. The OEM charge pipes used on the N54 and N55 engines are plastic, which becomes brittle and weak after time and repeated heat cycles. Once the charge pipe cracks, the engine begins drawing

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  10. Mishimoto Performance Air Intake for the 2023+ Nissan Z

    Dual Drive – Performance Intake for the 2023+ Nissan Z

    When Nissan planted the powerful VR30DDTT 3L V6 engine with twin turbochargers in the Nissan Z, there wasn’t much room left in the engine bay. The cramped area didn’t allow enough space to accommodate the traditional top-and-bottom-split airbox design, so they created a unique single-piece airbox with vertically inserted panel filters that maximized flow while minimizing size.

    As enthusiasts and engineers, we tipped our hats to appreciate the work Nissan did with this design. But we couldn’t help but ask ourselvesβ€”how can we make it even better?

    Design Process

    Our engineer, Ye, set out to design a direct-fit airbox for the 2023+ Nissan Z with these goals:

    β€’Β Achieve better airflow than stock
    β€’ Ensure a direct-fit, bolt-on installation
    β€’ Create a design that lets the user alternate between a sealed or open airbox setup
    β€’ Deliver a high-quality intake tone
    β€’ Maintain a safe air-to-fuel ratio and ability to run on a stock tune

    She began by inspecting and removing the stock airboxes to determine

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