Mishimoto TMIC prototype, end-tank logo

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
Mishimoto raw aluminum TMIC prototype
Mishimoto raw aluminum TMIC prototype
Mishimoto raw aluminum TMIC prototype
Mishimoto raw aluminum TMIC prototype

As you can see we designed two fully casted end tanks for this cooler. Both the BPV flange and Y-pipe flanges are CNC-machined. The thickness and construction of our casting will provide the durability needed to run much higher pressures than your STI will ever see. Each tank is then TIG-welded to our core. As with other projects, we are using a bar-and-plate core for improved heat transfer and resistance to heat soak. Let’s take a closer look at the core itself.

Mishimoto TMIC prototype, external core
Mishimoto TMIC prototype, external core
Mishimoto TMIC prototype, external core
Mishimoto TMIC prototype, external core
Mishimoto TMIC prototype, internal core
Mishimoto TMIC prototype, internal core
Mishimoto TMIC prototype, internal core
Mishimoto TMIC prototype, internal core

For both the internal and external fins we are using an offset style. This means our heat-transfer contact points are significantly increased, which will result in a higher rate of transfer. We crammed a ton of fins into this core; our testing will show if this has any negative impact on flow and pressure.

In recent projects, we have been trying to find creative yet subtle ways to put our branding onto our products. We understand that some customers might not be interested in promoting the brand of the products they use. For this particular cooler, we used two simple M logos cast into the tanks. Our team really digs it!

Mishimoto TMIC prototype, end-tank logo
Mishimoto TMIC prototype, end-tank logo
Mishimoto TMIC prototype, end-tank logo
Mishimoto TMIC prototype, end-tank logo

After confirming fitment of this prototype, we also had a few units powder-coated for testing and video purposes.

Next we would be comparing the size and features of our prototype to the stock intercooler. Check back in a few days for updates!

Thanks

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

Mishmoto Subaru WRX STi Performance Top-Mount Intercooler Kit

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