Regarding automotive performance, few platforms have grabbed the hearts of enthusiasts as have the Diamond Star Motors (DSM) vehicles, particularly the 1G and 2G models. At DarkLight Fabrication, we comprehend the enthusiasm that pushes DSM owners to search for custom solutions for their turbo exhaust manifolds, downpipes, and exhaust systems. In this blog post, we will dive into the history of the DSM 1G and 2G, and we will cover why these platforms are still such a popular choice among car enthusiasts today.

The Birth of the DSM: A Brief History

Mitsubishi Motors and the Chrysler Corporation collaborated to produce the DSM, a series of cars that were sold as sport compacts during the 1990s. From 1989 to 1999, the DSM shared a platform with three different cars: the Mitsubishi Eclipse, the Eagle Talon, and the Plymouth Laser. Although these cars differed in some styling details and in the number of cylinders in their engines, they were nearly identical under the skin. All three came standard with a turbocharged engine that displaced 2.0 L (122 cu in).

The first-generation Diamond Star Motors (DSM) vehicles, released in 1990, were revolutionary for their time. They offered a combination of lightweight design, all-wheel-drive (AWD) options, and turbocharged power. I was particularly enamored with the AWD models—the Eclipse GSX in particular—for their impressive traction and handling.

Introduced in 1995, the second generation—2G—had even more updated styling and better performance features. The models comprising 2G, which included the Mitsubishi Eclipse, as well as the Eagle Talon and Plymouth Laser, continued to make use of the 4G63 engine. This time, however, the folks at Mitsubishi and Chrysler turned the wick up on that engine, and it made even more power and torque than before. The 2G Eclipse GSX and GST models did what the 1G models had done: they became icons of the performance generation.

Why DSMs are Sought After by Enthusiasts

1. Performance Potential

Car enthusiasts cherish the DSM platform primarily for its one overarching attribute—"incredible performance potential," the Federal Register states. The reason is simple: It pairs a robust turbocharged engine with a lightweight chassis. That combination makes it easy for the first two generations of these cars to reach high power levels with just a handful of basic modifications; the platforms in question are the 1G and 2G Eclipse. At DarkLight Fabrication, we create custom turbo exhaust manifolds and downpipes for those chassis to help unleash their performance.

2. Tuning Flexibility

The DSM platform is celebrated for its tuning adaptability. With a vast assortment of aftermarket components accessible, aficionados can readily tweak their rides to fit their precise specifications. From beefed-up turbochargers to one-off exhausts, the make-it-better options are nearly limitless. At DarkLight Fabrication, we partner with DSM owners to conceive and execute around the vehicle solutions that make them scream undying praises for our rig's performance.

3. Community and Support

The DSM community is one of the most fervently loyal and constructive car communities there is. Car enthusiasts in this niche share their expertise on online forums and social media with incoming community members. This allows new members to catch up, get involved, and take part in our cars' voices, sounds, and shadows as we drive them day, night, and everywhere in between. This is the Digital Shadows Mitsubishi community.

4. Classic Appeal

The appeal that the 1G and 2G DSMs have with car enthusiasts is almost a classic one. Many owners enjoy the trip down memory lane that the nostalgic design provides when they get behind the wheel. And the raw driving experience that these cars deliver certainly doesn't hurt their desirability. They occupy a unique place in automotive history. In no small part because of the above, the demand for these models seems to be climbing, too.

Custom Solutions at DarkLight Fabrication

DarkLight Fabrication comprehends the distinctive requirements of DSM owners. Our cohort of adept fabricators concentrates on rendering specialized exhaust solutions that are personalized to each automotive specification. If turbo exhaust manifold, downpipe, or complete custom exhaust system is on your to-do list, you are better positioned to see that project through to its upping-the-ante finish with products from DarkLight.

The automotive performance industry is where we are and where we want to be. Our dedication to quality and customer satisfaction is what sets us apart from our competitors. We take our craftsmanship very seriously, making sure that every piece we create meets our very high standards. If you order from us, you can rest assured that your DSM will not only perform at its very best but also look good doing it.

Conclusion

The 1st and 2nd generation DSM platforms have made quite an impression in the automotive world. With their performance potential, tuning versatility, and straightforward charm, they have garnered a dedicated following of enthusiasts. Here at DarkLight Fabrication, we exist to render that following all the more justified by providing custom fabrication solutions that help you, the DSM owner, realize the oft-unforeseen possibilities held by your car. Whether you're a seasoned veteran or are just now venturing into the sometimes bizarre, always interesting world of the DSM, we invite you to explore those possibilities with us.

If you’ve upgraded your turbo or are planning to, one of the most overlooked power-adders is right under your nose — the downpipe. Too often dismissed as merely an exhaust component, an essentially unregulated downpipe—"custom" or otherwise—can release serious horsepower, torque, and drivability. Here’s how.

What Is a Downpipe, and Why Does It Matter?

The downpipe connects the turbine outlet of your turbocharger to the rest of your exhaust system. It's the first exit path for hot, high-pressure exhaust gases after they pass through the turbo.

Factory downpipes are typically:

• Narrow in diameter

• Filled with restrictive bends or kinks

• Often include catalytic converters, resonators, or flex joints that limit flow

These restrictions create back pressure, and in a turbocharged setup, back pressure = lost power.

How a Custom Downpipe Increases Horsepower

1. Increased Exhaust Flow Turbo performance depends on exhaust flow, but not just any exhaust flow. Since the turbo relies on exhaust gases to drive it, the gases must flow smoothly and quickly from the engine to the turbo charger, and then from the turbo to the atmosphere. A downpipe must be designed to do this, the better to make the turbo better. A downpipe must have a large enough diameter; that’s commonly 3 inches or more. A downpipe must have enough length; too short or too long, and the turbo won’t be happy. And a downpipe must not have any parts that would bend the exhaust flow, nor any parts that would reduce the flow, which means no flapper valves, exhaust ports, or other funny business.

2. Less Back Pressure = More Turbo Efficiency The fewer obstacles your exhaust gases encounter, the easier it is for your turbo to do its job. A downpipe with high flow after the turbine wheel significantly reduces back pressure, which: Delivers a faster spooling turbo. Produces a turbo that makes boost more effectively. Causes a turbine to work less and generate the same power.

3. Accessing More Potential with Custom Tuning A downpipe is just the start. It allows for flow, yes, but also for tuning. With better flow, your tuner can do more — do it safer — and get more from your engine: Increase ignition timing safely Run higher boost more efficiently Improve air/fuel ratio control You might see 15–30+ whp gains on a properly tuned turbo car with just a downpipe swap, depending on the setup.

Why Go Custom Instead of Off-the-Shelf?

An off-the-shelf (OTS) downpipe is designed for a stock setup — and often compromises fitment, weld quality, or material just to be universal. A custom-fabricated downpipe from DarkLight Fabrication is tailored specifically for: Your turbo kit Your engine bay layout Your goals for sound, clearance, and power And because we TIG weld all our downpipes using 304 stainless steel, you get: Superior weld strength Rust-free durability Clean aesthetics with exact routing We can also build in wideband sensor bungs, V-band or flange transitions, and provisions for heat shielding — all the little details that set a serious build apart.

Is a Custom Downpipe Worth It?

If you operate a turbocharged engine — indeed. One of the best_returns-for-your-buck modifications, especially when matched with calibration, is a custom downpipe. You’ll receive: An increase in the amount of horsepower and torque An even faster spool-up of the turbo Better throttle response An exhaust note that’s way more aggressive than stock And if you work on your engine and add future mods (like an upgraded turbo or different motor), a high-flow, totally reliable downpipe is the best thing to have at the beginning of your build.

Let’s Build Yours

At DarkLight Fabrication, we produce every downpipe with care and precision. Each piece is made from 304 stainless steel and is TIG welded in house. The routing, diameter, and specifics of each downpipe are matched to the customer’s individual setup. That makes us the go-to source for both serious street cars and those living on the edge of the law. Our downpipes are guaranteed to perform well under pressure.

Few names resonate as deeply as Audi when it comes to high-performance vehicles. Among its illustrious selection, the Audi S4 stands out as a true gem, particularly for car enthusiasts who value the luxurious performance and engineering excellence it delivers. At DarkLight Fabrication, we recognize the importance of the S4 in the automotive world, especially when it comes to custom fabrication like turbo exhaust manifolds, downpipes, and exhaust systems. In this blog post, we'll dig into the history of the S4 and why it remains a premiere platform among car enthusiasts.

A Brief History of the Audi S4

The performance-driven Audi S4 first appeared on the scene in 1991 as a souped-up variant of the Audi 100. Its engine was nothing short of glorious. The original S4, known internally as the B4, was loaded with a 2.2-liter, inline-five engine that was turbocharged, of course. That made for one blast of an engine that was good for an impressive 227 hp. Even more key to the S4's success was that its engine, along with the rest of the car for that matter, was usable on a day-to-day basis.

In 1997, the S4 became the B5 generation, which brought with it a 2.7-liter twin-turbo V6 engine. This mill was a true performance engine, delivering 265 hp and an eye-popping 295 lb-ft of torque. Audis have always been known for their all-wheel-drive capabilities, but the B5 S4 took that concept to a whole new level, making it not just a good-driving car in adverse weather but a serious contender for track-day fun.

The B6 generation followed in 2003, featuring a more refined design and an upgraded 4.2-liter V8 engine that produced 340 horsepower. This model further solidified the S4's status as a performance icon, offering a perfect balance of power and luxury. The B7, introduced in 2005, continued this trend with similar performance specs but added more advanced technology and comfort features.

The B8 generation, introduced in 2009, represented a seismic shift in the  lineup. Gone was the naturally aspirated V8 of the B7. In its place was a supercharged 3.0-liter V6 that produced 333 horsepower. Performance metrics were impressive, with sprint times from zero to 60 mph quoted in the low five-second range (which, of course, never gets old). And even better, fuel economy improved. The B8 S4 was rated at 18 mpg city and 28 mpg highway; the V8 mustered only 15 mpg in mixed driving. Shifting duties fell to a seven-speed dual-clutch transmission. The DCT was still a relatively new technology in 2009, and while older DCTs were criticized for being jerky and not tolerating stop-and-go traffic very well, the DCT in the B8 S4 never garnered such complaints. In fact, it was an utterly seamless, increasingly impressive transmission that made upshift shifts in 4-thru-7 mode at wide-open throttle that were downright exhilarating.

The most recent version, the B9 S4, came out in 2016 and has a more polished look and an even fancier tech suite. It keeps the supercharged 3.0-liter V6 but now makes 349 horsepower and 369 lb-ft of torque; the four-door retains the same performance figure of 0-60 mph in 4.4 seconds. The B9 S4 reaches the big sedan's top speed of 155 mph with reasonable ease, owing to the Quattro all-wheel drive that gives the car better grip than most vehicles on this list.

Why the Audi S4 is a Sought-After Platform

1. Performance Potential

The Audi S4 has always had a strong reputation for performance. With every new generation, the S4 has taken the established formula of the luxury sports sedan and pushed it even further, combining powerful engines, advanced all-wheel-drive systems, and precise handling to give it the kind of exhilarating driving character that's always earned it an enthusiastic following.

2. All-Wheel Drive Mastery

Legendary is the all-wheel-drive system in the Audi Quattro, providing traction and stability in diverse driving conditions. This is particularly alluring for enthusiasts living in climates with extreme weather or who enjoy spirited driving in the sorts of twisty roads where you find lots of alternating turns that test steering precision as well as the grip of front and rear tires. In contrast to many competitors, the Audi S4 stands out as a vehicle that can easily maintain said grip while you direct it to deliver power to all four wheels.

3. Luxurious Interior

Although performance is the main focus, the Audi S4 is still a luxury car. The interior is not just thrown together; it is crafted with quality materials, advanced technology, and plenty of comfort. And the kind of people who buy S4s—who don’t necessarily live life on the edge but value a bit of weekend adventure—seem to appreciate the car's suitability for both daily driving and, you know, more exhilarating pursuits.

4. Tuning Community

The Audi S4 enjoys a vigorous tuning community that really gets into modifying and enhancing the performance of the car. From the custom exhaust systems that make the S4 sound like an angry beast to upgraded turbochargers, enthusiasts have access to a huge range of aftermarket parts and services. Here at DarkLight Fabrication, we specialize in the S4, making custom solutions that suit the unique needs of each owner. We want to help ensure that you get the most out of your already-amazing (and totally underappreciated) performance sedan.

5. Timeless Design

The evolution of the Audi S4's design is a consistent hallmark of the car. It has always maintained a look that is sophisticated and, dare we say, somewhat understated. But it has also always had an appearance that is undeniably sporty and aggressive, to the point where you might (rightly) get the impression that it is a vehicle capable of hanging with far more exotic machinery.

Conclusion

The history of the Audi S4 stretches over three decades and reflects the brand's dedication to performance, luxury, and innovation. For car enthusiasts, the S4 represents a platform with endless possibilities for customization and enhancement. At DarkLight Fabrication, we are passionate about helping S4 owners unlock the full potential of their vehicles. Using our expertise in fabrication and performance upgrades, we aim to help you achieve your automotive dreams, whether you're looking to enhance your turbo exhaust manifold, install a custom downpipe, or create a bespoke exhaust system.

Become a member of the group that loves the Audi S4 and feel the excitement of driving a car that performs like an icon and is beloved worldwide by all kinds of car enthusiasts.

Your vehicle's performance can only be matched by a few modifications, but when it comes to bang for your buck and improvement in overall performance, there are few things that can touch a custom exhaust system. If you're trying to achieve a specific sound, if you want to improve your horsepower and torque, or if you just want to switch out the stock exhaust system for something better, the journey should start with finding a reputable shop for exhaust fabrication in Denver.

1. Expertise in Custom Fabrication

The shop's know-how in custom fabrication is one of the foremost considerations. A good shop has experienced technicians who understand the exhaust system's intricacies. They are well-versed in the materials and techniques that create durable, high-performing exhaust components. DarkLight Fabrication's expertise is in turbo exhaust manifolds, downpipes, and systems designed specifically for your vehicle.

2. Quality of Materials

The materials that shops use when fabricating exhaust systems can significantly impact both the performance and the durability of the finished systems. It's unwise to trust a shop that doesn't use high-quality stainless steel or some other durable material that can take the intense conditions of life on the road. A good shop will be clear about what materials they use and equally clear about why they've made those choices. At DarkLight Fabrication, we don't mess around when it comes to sourcing the right materials. Exhaust systems are too important to be fabricated from anything but the best materials.

3. Customization Options

No two cars are exactly alike, and neither are their owners. DarkLight Fabrication can work with you to create an exhaust system that meets your unique needs and wants. We can tailor any of our systems to achieve the desired look for your vehicle. From aesthetic improvements to something more specific, like wanting a certain sound to come out of your exhaust, we can meet your wildest demands and finish with a vehicle that not only runs well but also looks and sounds great.

4. Advanced Technology and Equipment

The realm of automotive performance is largely dictated by technology, and a good shop should be outfitted with modern means of automotive fabrication and installation to ensure precise element assembly—the sort of things you’d more commonly find in a race shop. Namely, this includes CNC machines, mandrel benders, and high-quality welding equipment. DarkLight Fabrication has, in many ways, an unfair advantage. We utilize state-of-the-art technology to guarantee that each and every component is crafted to perfection, and to us, that means elements not only fitting together seamlessly but performing to an optimal level.

5. Knowledge of Local Regulations

When changing your exhaust system, it is paramount to consider the emissions regulations and noise ordinances that are in effect in your locale. A good shop—like DarkLight Fabrication—will know these laws and understand how to design an exhaust system that satisfies them. This is especially vital for a jurisdiction like Denver, which has a reputation for having strict environmental standards.

6. Portfolio of Previous Work

Prior to choosing a shop, it is wise to take some time and review their portfolio of past work. A quality shop will be proud of their projects and have instances of their craftsmanship that potential customers can check out. We recommend looking for testimonials from previous customers and visions of completed projects that speak to the quality of work a shop is able to produce.

7. Customer Service and Support

A good exhaust fabrication shop should put customer service first. From the very first consultation to the last installation step, you should feel like they value your input and concerns. They should listen to you and what you want; this is a good sign. Then, too, you should feel like they are communicating clearly with you. You shouldn't get to the end of the job and be surprised by anything. DarkLight Fabrication operates this way. We believe in building good relationships with our customers and ensuring that you feel confident and informed at every step.

8. Competitive Pricing

Even though quality should be your main focus, you really need to think about pricing too. A trustworthy shop will give you clear and detailed estimates of costs before they do any work for you. You should be cautious of shops that are much cheaper than others, since they may be using poor materials or not employing skilled workers. At DarkLight Fabrication, we don't do any of that. Instead, we offer good prices that don't come at the cost of quality. We're sure you'll find that we give you very good value.

Conclusion

Building a completely custom exhaust system becomes a joyous occasion for any car-loving person who wants to better the sound, feel, and performance of their ride. Our local Denver exhaust fabrication shop operates at the highest quality standard, and is a go-to spot for custom fabrication. It has a very nice and highly qualified staff, and by all appearances, it makes welds and fabricates parts that go together very well. And the best part is they do all of this at very reasonable prices.

If you are in search of downpipes, turbo exhaust manifolds, or an exhaust system that is completely custom, DarkLight Fabrication is here to help you achieve your automotive untouchables. Discuss your project with us today, and we will show you the path to how your vehicle can perform to the best of its abilities!

Few cars have truly captured the hearts of enthusiasts like the BMW E30 when it comes to automotive performance. The E30 is known for its classic styling and nimble handling, but for car enthusiasts, the E30 is a palette upon which they can paint their automotive dreams. One of the most popular ways to give the E30 a new lease on life is to swap in a new engine, and the 24V M50, M52, S50, and S52 engines are some of the most loved options for doing this. Turbochargers are no less popular in the world of E30 mods, and that's where we come in: DarkLight Fabrication is the go-to shop for making the kind of parts that E30 owners in need of forced induction require—parts like turbo exhaust manifolds. In this post, we'll run down some of the engine choices and other go-faster goodies you can bolt onto your E30.

The E30 Legacy

The BMW E30, manufactured from 1982 to 1994, enjoys a revered status among car enthusiasts. It is known for several key characteristics that predate the current era of turbocharging and the extensive use of electric motors. For one, the E30 is predominantly a naturally aspirated car. If you go looking for founding E30 models, you will find that they are light, RWD (rear-wheel-drive), and well-balanced in terms of chassis dynamics. Naturally, with excellent power-to-weight ratios, the great cars of the E30 line are excellent platforms for performance upgrades. On top of that, they are reliable.

The Allure of the 24V Engine Swaps

1. Power and Performance

The known M50, M52, S50, and S52 engines are known for their impressive power output and smooth delivery. The M50, for example, produces around 189 horsepower, while the S50 can push over 240 horsepower. This power increase transforms the E30 from a fun daily driver to a thrilling performance machine. With the added torque and horsepower, the E30 now has quicker acceleration, improved throttle response, and, just in general, a more engaging driving experience.

2. Modern Technology

Enthusiasts choose to perform these swaps for the advanced technology of the M50, M52, S50, and S52 engines. These engines are designed with DOHC (Dual Overhead Cam) layouts, which promote better airflow and more efficient combustion. Meanwhile, the M52 and S52 are equipped with VANOS (variable valve timing), which allows for better performance at higher RPMs (and at any RPM, really). All of this means more power and torque, coupled with better fuel economy. And it means that the E30 is just a more enjoyable car to drive, both on the street and on the racetrack.=

3. Aftermarket Support

Due to the popularity of the BMW E30 and its compatible engines, there exists a sturdy aftermarket support system. Here at DarkLight Fabrication, we can build you a custom exhaust system, turbo manifold, and downpipe that fit your needs perfectly, whether you've swapped in an S14, an S38, or an M62. We prefer to work with what's called "stainless mild steel," which is a little less corrosive than the regular mild steel most people use, but is still very weldable and workable. For performance parts, beyond what we ourselves can fabricate, there is a wide array of options in the aftermarket, from intakes to ECUs to suspension. And when it comes to the E30 and the M3, the aftermarket parts scene is positively flush.

4. Weight Distribution and Handling

Switching to a 24V motor can also improve the weight distribution of the E30. The inline-six motors are relatively lightweight and can be positioned much further back in the engine bay compared to the stock engines. This shift enhances the car's handling, with sharper cornering and a better overall balance, even compared to V8-swapped E30s. Drivers connected to the cars report a speedier and more enjoyable driving experience.

Custom Fabrication at DarkLight Fabrication

At DarkLight Fabrication, we know there's a wide spectrum of custom automotive work that can and should be done for each individual’s personal vehicle goals. That's why we created a shop dedicated to custom fabrication and making parts for all kinds of performance-driven scenarios.

If a part you need doesn't exist in our catalog or isn't available on the open market, we've got the tools and the know-how to make it for you. That's just one of the many reasons we say with pride that the work we do at DarkLight Fabrication is "tailored to your specific needs." Some of the parts we make include:

1. Turbo Exhaust Manifolds

A custom turbo exhaust manifold is a must if you want to increase the performance of your 24V engine. Our team can design and fabricate a manifold that maximizes airflow and minimizes turbo lag, ensuring that your engine performs at its best.

2. Custom Downpipes

It is essential for well-designed downpipes that exhaust flow and back pressure be improved. Custom downpipes of ours are made to fit flawlessly with the way each customer modifies his or her engine, resulting in not just performance but also sound that is as close to ideal as possible.\

3. Exhaust Systems

Not only does the optimal exhaust system boost performance, but it also changes the auditory character of your E30. We have several different kinds of exhaust systems, ranging from wild race setups that would make even the most cantankerous NASCAR engine weep with envy to systems so refined that they could be mistaken for a street-friendly duet with a tree-hugging acoustic guitarist in a quiet city park.

Conclusion

The 24V M50, M52, S50, and S52 engine swaps for the BMW E30 are more than just a trend; they are a testament to the car's enduring legacy and the passion of its enthusiasts. With meaningful power gains, modern technology, and the ability to customize your setup, these engine swaps provide an exciting driving experience. At DarkLight Fabrication, we are committed to helping you unlock your E30's potential with our expert fabrication services. Whether you're a veteran enthusiast or just a budding one, we provide support for your every move.

Prepared to elevate your E30 to the next level? Get in touch with us today to inquire about your needs regarding custom fabrication!