Page 4 - ecoboost

In our last update, we left you with some mock-up prototype pieces that we used to create and refine our Fiesta ST rear strut brace design. Since then, we've worked up a couple of functional prototypes to test our ideas for stiffening the rear of this hot hatch.

Initial Prototypes

We constructed two prototypes of this trunk brace. The first prototype is finished in a black powder coat, and we'll use this unit to evaluate for aesthetics and fitment. The unfinished ("raw") prototype is going to be used for testing purposes, meaning it will be modified.

First, check out our powder-coated unit bolted into place.

Mishimoto Fiesta ST performance parts

The most exciting part of product R&D is always the testing phase. This typically includes setting up some neat sensors, running the car on the dyno or on the street, and crunching our data. We are anxious to see how our first prototype coolers perform on the Fiesta. Let's jump right into the plans for this first round of testing.

Testing Plans

As mentioned in the previous segment, we will test four different coolers.

• Stock intercooler
• Mishimoto bar-and-plate prototype 1 (larger internal bar height)
• Mishimoto bar-and-plate prototype 2 (smaller internal bar height)
• Mishimoto tube-and-fin prototype

For each cooler we will be collecting data for temperature, pressure, and power output. Each cooler will be tested repeatedly until we have three consistent runs producing data as accurate as possible.

Below is a look at the three different core types that will be tested.

We are quite excited about the completion of our final prototype intake for the Ford Fiesta ST (FIST)! After months of development, testing, and design work, we are ready to present our final creation. First we will go through each component and cover important details regarding their features.

Silicone Turbo Inlet Hose

Starting at the turbocharger compressor inlet, we have our silicone inlet hose. This piece was constructed specifically for this kit and is extremely robust.

Mishimoto's Ford Fiesta ST intake silicone inlet hose

Five layers of silicone comprise this hose, along with embedded fibers and steel wire for added rigidity. This hose must withstand the suction

We're back with another update! Our team has been busy constructing our functional Ford Fiesta ST (FIST) intercooler prototypes, putting a lot of work into the R&D design stages, and now we get to see if it pay off. Enough of the wait, lets jump right into some images of our five prototype coolers.

Ford Fiesta ST intercooler prototypes

Ford Fiesta ST intercooler prototypes

After taking a brief look at the factory cooler and components, we needed to begin the design for our counterpart. This will involve the use of both modern and conventional tools to ensure that our prototype meets all our requirements.

Factory Intercooler Features

Factory F150 intercooler

The factory intercooler pulled from our test vehicle came with the upper shroud that Ford had added to help prevent condensation issues. It also included a couple mounting pegs which use grommets for isolation.

It has been a while since we took a look at what is going on in the world of the Fiesta expansion tank. In our last post we test fitted our 3D-printed prototype on the Fiesta ST. After fitment was confirmed, we played the waiting game for our final prototype's arrival at our development facility. Our best efforts at being patient paid off when we had two packages arrive this morning!

Fiesta ST expansion tank

Fiesta ST expansion tank

Each expansion tank comes with an overflow hose

The EcoBoost (EB) engine series is quite impressive and packed full of amazing technology. Direct injection and efficient turbochargers have contributed significantly to improved fuel mileage without compromising engine output. Our fleet of shop vehicles currently includes two EB-powered vehicles, a Fiesta and a Mustang. Both models thoroughly impressed our team with their power, drivability, and handling. We developed a ton of new products for the 1.6L, 2.0L, and 2.3L. Now it is time to turn our attention to the V6 EB world. Our first target is a performance intercooler for the 11-14 3.5L F-150.

From our experience with other EcoBoost models, the factory intercoolers are not exactly ideal. The Mustang heat-soaks after a few pulls, and both hot hatches will quickly exceed the intercooler efficiency with a couple easy modifications. Although the factory F150 intercooler is comparably more stout than the coolers for the smaller 4-cylinder models, many have still found it to be inefficient