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The Prototype – ND Miata Intake, Part 2

The Engineering Department here at Mishimoto has been buzzing with activity around our new Miata intake design. We’ve just constructed a prototype pipe and box, bringing us even closer to dyno testing! Let’s walk through the process.

It’s extremely important we pay close attention to detail on this project. From the beginning, we knew this box had to be made of aluminum, not steel, which is much too heavy. We also decided to utilize the factory air duct on this setup, so the box has an inlet accommodating that component.

Airbox Construction

The next few images show how we went about designing the air box. A major goal for the air box design was for it to be simple to install so utilizing factory mounting points was a must. Below, you’ll see shots of the stock Miata intake system removed and a couple of our pieces being test fitted.

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Stock Miata intake system removed
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Stock Miata intake system removed

Here are some shots of the airbox we plan to fit into that space.

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Prototype Miata air intake system box
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Prototype Miata air intake system box
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Prototype Miata air intake box

And here are some shots of the air box fitted into the bay of the MX5!

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Prototype Miata air intake box fitted into the bay

In the below image, you’ll see a prototype hose which will direct air from the factory fresh air duct into our airbox. The final component will be made of multi-ply silicon complete with a smooth interior surface for uninterrupted airflow.

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Prototype intake fresh air duct adapter
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Inside look at the prototype intake fresh air duct adapter

Pipe Construction

The pipe will have a smooth transition from the airbox to the throttle body and the ability to retain or delete the factory sound tube.

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Fabricating Miata intake pipe
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More pipe fabrication

Check out the shot below of our intake pipe mocked up on the throttle body and connected to the air box. Weather stripping lines the pipe inlet to prevent noise from vibrations.

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Pipe and box mocked up in the engine bay
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Pipe and box mocked up in the engine bay

We bolted our selected conical air filter into the box once the piping and box were complete. Mishimoto filters are oiled units, meaning they can be cleaned and serviced to ensure a lifetime of use.

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A shot of the filter we plan to use

Here is a closer look at our adapter for the MAF. We made this piece in-house with our state-of-the-art 3-D Printer. Of course, the final product will have a CNC-machined piece built into the pipe, but for testing purposes, this works just fine. Check out that epoxy setting in.

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3-D printed MAF adapter attached to the pipe

Finally, here’s a shot of the entire initial prototype installed on the car.

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Full shot of the entire prototype Miata intake system installed
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Different angle of the entire prototype Miata intake system

Coming Soon!

Now that the system has been fitted onto the car, we are eager to put our trusty Dynapack to good use and see how this new Miata air intake system performs. A lot of great stuff is on its way so stay tuned!

-Diamaan

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