EVO III GT Facts

Introducing the

Evo 3 GT

Lately there has been a lot of commotion in the Mitsubishi enthusiast community about the new turbo that we developed called the Evo 3 GT. “Evo 3” because it fits all Evo 3 applications, and “GT” because it is upgraded straight out of the factory—no need to pay extra to have it ported and flapped by a machine shop.

Distributors, retailers, and customers that have evaluated it, tested it, and used it, praise it.

Retailers who don't sell it have knocked it.

This site explains it once and for all.

Contents:

(hyperlink the following words to jump to that section on site)

Ported turbine housing

Enlarged 34mm flapper

Turbo Quality

Test Processes

Compressor Wheels

Wheel Balancing

Turbine Housing/Wheels

Premium packaging

Misc. Slander

In Summary

Available 2G Retrofit kit

Ported Turbine Housing

The Evo 3 GT comes equipped with a standard ported turbine housing upgrade. The inside is not shiny, like a normal port job, because the porting was done in the casting and not done by a machinist.

When machinists port a turbo, you never know what you're going to get. Some port jobs shave too little metal and do little to increase performance. Some port jobs shave too much metal and leave the walls of the turbine housing too thin to withstand the 1200 º+ (f) temperatures and 120,000+ RPM spinning of the shaft, and lead to failure.

The GT's designers studied many different porting designs, and ran each through sophisticated computer tests before we decided on the turbine housing design. And once we arrived on the perfect porting, we reinforced the walls of the turbine housing to MHI factory spec to give the turbo more resilience to heat than a regular ported Evo 3.

With the Evo 3 GT, customers get a perfect porting every time, with no risk of weakened turbine housing.

Increased Flapper

We increased the size of the wastegate and flapper to help avoid the ominous “boost creep.” This feature on the GT is identical to the aftermarket upgrade available from any turbo shop. The only difference: This upgrade is done at our factory at no additional cost.

Turbo Quality

Nobody wants to buy a turbo and pay for installation only to have the turbo fail in short amount of time. We understand that, and created a turbo that would stand the test of time and abuse as well as, if not better than, the normal Evo 3 turbo.

First, the FACTORY used to develop and manufacturer this turbo has a reputation as Taiwan 's highest quality turbo factory. Again, I say Taiwan , not China . Mainland China indeed has a bad reputation for turbo quality, while Taiwan has a reputation for being the best quality manufacturing in Asia . Those companies that are losing customers to the GT want you to believe it was made in China . Not true. This factory is Taiwan 's leading volume turbo factory, and a major supplier of turbos into Japan , and for good reason—quality.

Second, our factory had help FINE-TUNING the turbo before we started selling it. This help came from a mechanical engineering Ph.D. from the Industrial Research Technology Institute (ITRI)—a nationally-subsidized R&D facility in Taiwan that is considered the “NASA of product development”—and from experts at Turbochargers.com.

Third, the Evo 3 GT underwent extensive TESTING before it was released to the public. A factory can develop a turbo in 6 weeks. We took 6 months developing the Evo 3 GT, and 4 of those months were spent testing and fine-tuning.

Test processes

This enormous air compressor pumps heated air into the turbine housing or cool air into the compressor housing. Through the use of sophisticated equipment, they are able to control the heat of the air and flow rate to simulate every circumstance the turbo may encounter during use, then the advanced software (shown below) maps out the results.

Compressor Wheel Testing

To ensure that the compressor wheel can withstand any amount of abuse without breaking, we performed a thorough series of “stop tests.” This is performed by bringing the turbo up to 120,000 RPMs through pumping air into the compressor housing inlet, then, to test the strength of the compressor wheel blades, the compressor housing outlet is blocked, thus putting literally tons of air pressure onto the compressor wheel blades. This test is performed over and over again until the president of the factory is satisfied, usually 40 or 50 consecutive times.

In order to comfortably pass this rigorous compressor wheel strength test, we decided to make the blades on the compressor wheels thicker than Mitsubishi's. Fundamentally, Mitsubishi's 49178-01470 (Evo 3) is designed to be stock replacement turbo. The Evo 3 GT was designed and built for racing.

Wheel Balancing

We used state of the art balancing equipment to balance the Evo 3 GT cartridge to Mitsubishi's exacting tolerances. (see balancing machine below)

Turbine Testing

This is the most critical part of turbo. During racing conditions, turbos often heat up to 1200+ º degrees (f), and therefore the turbo needs to be built to handle those hellish conditions with ease.

TURBINE WHEEL: Extreme heat can weaken the wheel's metal alloy and cause it to stretch, bang up against the turbine housing, chip, and then consequentially destroy the turbo. This is the most difficult part of the turbo to test, requiring the turbo to run at red-line speeds for 7 days straight at great expense to the factory. Needless to say, the turbine wheel passed this test with flying colors, not even stretching a fraction of a millimeter.

TURBINE HOUSING: The turbine housing is equally susceptible to heat damage as the wheel. Improperly designed turbine housings can warp and distort the ultra-fine tolerances, or simply crack (like how cheap headers crack). This is tested at the same time as the turbine wheel, 7 straight days of 150,000 RPM at an average temperature of 1300 º (f). Like the wheels, the turbine housing performed beautifully.

MATERIAL COMPOSITION: Turbine housings are composed of 42 different elements, but the most important element is nickel (Ni). The Evo 3 GT's turbine housing is composed of 12.45% nickel, higher than Mitsubishi's, which gives the GT greater resilience to heat.

COLOR: The difference in color between the GT and normal Evo 3 has more to do with the trace elements than the primary materials. Our competitors want you to believe that color is a reliable indicator of quality. Think for yourself; is orange juice healthier for you than apple juice because it's orange?

Evo 3 Packaging

Rather than using shoddy boxes like Mitsubishi, we chose to spend more money and package our premium turbo with premium packaging. Each Evo 3 GT comes in a ¼”-thickness box, with form-fitted foam for maximum protection during shipping, and two separate pieces of foam for easy removal.

Misc. Slander

The Evo 3 GT's competitors are working very hard to convince Mitsubishi enthusiasts that the Evo 3 GT is a fraud, a failure, and a fake.

The truth is, nobody has ever attempted to pass off the GT has a genuine Mitsubishi turbo. Why would we? The GT is a specialty performance turbo that is affordable, not an overpriced stock replacement with overpriced upgrades.

The “ China GT,” as some call it, is NOT made in China , but rather in Taiwan —the quality manufacturing capital of Asia . This is a deception of the lowest caliber perpetrated by individuals who are proving themselves to be of low integrity.

Don't rely on color to indicate quality. Test the GT against the normal Evo 3 on a car, on a dyno, or in a testing lab, and you won't find an inferior turbo in the GT.

The critics of the GT are so desperate for arguments against our turbo that they have resorted to using fake pictures. The most egregious example of this slander is Slowboy Racing's comparison of a “good” Mitsubishi-made Evo 3 thrust bearing against a “bad” Mitsubishi-made thrust bearing, then claiming that the bad thrust bearing is from the Evo 3 GT. Notice that both of the thrust bearings they compare have Mitsubishi numbers?

If this is not enough to discredit Slowboy's critique of the GT, what is?

In summary

The GT was created to provide the Mitsubishi enthusiast community with a low-cost, high-quality turbo for their Mitsubishi cars. As is the case with any new product, those people with vested financial interests in the current product will say anything, true or false, to ruin the market for the new product. Don't be fooled by these slander artists into paying more money. The GT is an excellent turbo at an excellent price.

2G Install Kit

We used our same approach of quality and precision to develop this kit so that the Evo 3 GT can be installed on 1995-1999 models. This kit is superior to other 2G kits in that it features:

1. 45-degree angle brass adapter on one end of the oil drain hose for easier installation.

2. Braded steel oil supply line that derives its oil supply from the oil filter housing, which means the oil entering the turbo is filtered.

3. Our kit includes high-quality gaskets, including a turbo-manifold gasket ($30 value).