Welcome to

MiragePorsche Tuning Specialists

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For More Information:
Tel: 858-581-1101 or Email: jae@mirageintl.com


Our goal is to make the best-performing Porsches

About Mirage Intl

Mirage International, Inc. is a proven leader in the Porsche performance market. Since 1988, Porsches have been our business, and they’ve been our passion for even longer.

In its original location in the Clairemont neighborhood of San Diego, Mirage International originally focused on parts sales and vehicle exports to clients in Asia. This experience forged lifelong relationships that continue to this day.

Over the years, local clients increasingly approached us to apply our expertise directly to their own vehicles. Addressing their needs meant expanding our operation to its current location near Miramar Road, where our primary focus is now on improving the performance of Porsches for both street and track use.

Our specialties include Porsche engines, suspension upgrades and chassis tuning.

We have worked with Cosworth Engineering, Ed Pink Racing Engines and Singer Vehicle Design to develop and assemble some amazing Porsche ‘Mezger’ engines. Our engines are built in-house to exacting standards. This rigor and attention to detail is applied to every Porsche we work on whether it is lightly modified, completely stock or reimagined by Singer.

Every component we use and sell is tested and proven. This approach benefits racing applications and street cars alike. We can supply quality OEM parts, aftermarket equipment and guidance.

Mirage International is small enough to take real pride in each and every job, yet has the resources to tackle even the toughest projects. We’re as honored to have built the engines for Singer Vehicle Design as we are to assemble the one that goes into a daily driver.

We strive to make your Porsche as fast, reliable and predictable as it can be. Your performance is a direct reflection on our performance. Please feel free to email us at jae@mirageintl.com with any questions or contact us here.

To see some of our cars and track days, please follow us on social media:


We pride ourselves on our ability to build Porsche ‘Mezger’ air-cooled and water-cooled GT engines. Every engine project we undertake is measured and assembled in-house to exacting specifications.

Our engine-building reputation attracted the attention of Singer Vehicle Design in its early days. Mirage International designed and built the 3.8-liter engines, bringing our expertise to the now-famed high-end modification brand. In fact, Jae Lee of Mirage International personally built many of these engines which today bear a Cosworth badge.

Jae’s personal car has served for many years as a test bed for high-performance engine development. It’s currently powered by a proprietary 4.4-liter air-cooled monster that is reliably generating 440 horsepower.

Coaxing this level of performance out of a normally aspirated air-cooled flat-six is no simple matter. These Porsche engines develop destructive dynamic imbalances when they grow beyond four liters. During development on the dyno, the resulting vibration caused GT3 oil pumps and numerous other internals to fail catastrophically with little warning. Resolving this challenge was a serious hurdle to overcome in developing this engine. This is also the reason Jae’s 4.4-liter engine is so unique. It serves as a testament to Mirage International’s determination in understanding these engines to a degree that few dare.

We are honored to have built engines for Singer Vehicle Design and to have the opportunity to build the one that goes into your Porsche.

and more…

We believe that the best Porsches exhibit balance. To complement the engine and drivetrain, Mirage International corrects the suspension geometry and tunes the chassis for optimum street and competition handling.

Our goal is succinct – to make the best-performing Porsche.

In the News

Jae Lee Drives A 1973 Porsche 911 With A Massive Air-Cooled And Naturally-Aspirated 4.4-Liter Flat-Six That He Built

 by Patrick Stevenson

Read the full article, Jae Drives a 1973 Porsche 911

The sound is still ringing in my ears and it’s been well over a week. Approaching its 7,500-rpm redline, the 4.4L flat-six in the back of this car demonstrates just how worth it all the hard work was. Being a Porsche enthusiast and 911 owner myself, this is nothing short of a dream engine build. It is 440 horsepower of pure air-cooled magic; no turbochargers, just naturally-aspirated operatic screams.

At Chuckwalla Valley Raceway, after my pulse has settled after the ride we’ve just had, I sit down with the car’s engine designer Jae Lee. He owns Mirage International, a Porsche race and service facility in San Diego, CA. After a bit of catching up, we talked about the five-year development of what is at the moment the world’s largest air-cooled Porsche flat-six.

Jae’s passion for Porsche started with the 1973 911T pictured here, which he purchased in 1990 when it looked quite different. Mirage International was exporting Porsches to Japan at the time, as the country was having a huge economic boom and gobbling up all the clean 911s Jae could find.

As many Porsche owners do, Jae started taking his personal 911 to the track with his friends, and he became obsessed with tuning the suspension on his car. On his humble track day beginnings, he says, “I was driving out at Willow Springs on the big track, and I was just not confident in the car. The balance was not right, so I kept messing with it. I knew it could lap faster, but I wasn’t comfortable with how it felt. Finally I got it dialed and started beating all my friends. Soon after, they were all asking me to set up their cars. So, the business kind of just evolved into a Porsche race shop.”

With personal and professional pursuits aligning, Jae always made time to develop his own car, and soon enough his trusty ’73 911T was modified with RSR wide fenders in the front and rear, the stock torsion bar suspension was removed and springs were added, larger wheels were introduced to fit larger brakes and they wore wide racing slicks. Of course, in this pursuit of speed power is eventually needed after the chassis work, and Jae found a new obsession in the engine room.

Being a racer and race shop owner, Jae has seen his share of blown engines. Racing is the most stress anyone can put on a motor without the intent to brick it. The sustained high revs and corner G-forces will put any engine to the test, and he certainly tested a few. The 911 ended up with a 3.6L engine out of an early ’90s 964 back in 1995, which was then built out to a 3.8L.

More… Jae Drives a 1973 Porsche 911

Contact Mirage Intl


Jae-LeeHello my name is Jae Lee. I will be your contact at Mirage International in San Diego. I have been in the business of selling, exporting, repairing and installing Porsche parts since 1988. I speak Japanese and have many affiliates in the East.

Mirage International, Inc.
Ph 858-581-1101
Fax 858-581-1102



Mirage International, Inc.
Ph +1 858.581.1101