The 5 Best Grimmspeed Products

The 5 Best Grimmspeed Products

Mar 29, 2023Austen Wageman

Grimmspeed is the indisputable leader in the automotive performance field with their well-known products that always prove to be reliable. It's no wonder so many of us entrust them with our cars - when you want to ramp up your ride, the company truly delivers. From bypass valves to boost controllers, they have everything needed for getting a vehicle to perform at its best. Our list of five top products from Grimmspeed highlights their fantastic range, proving why they've become one of the most sought-after names in automotive performance.

Grimmspeed's AOS

Known for its innovative design, they've has developed an AOS that is sure to impress even the most seasoned car enthusiast in their modified cars. With its effective solution for keeping your engine running smoothly and efficiently, the Grimmspeed AOS stands out as a top-performing product for multiple Subaru fitments. Don't settle for reduced fuel octane, oil build/higher oil consumptions, engine knock, and worse emissions – upgrade to the Grimmspeed air oil separator today.

Grimmspeed AOS from MAPerformance

When it comes to automotive performance, nothing beats the high-quality products and easy installation of the air oil separator.

This AOS is self-maintained, even in cold climates. We here at MAPerformance are proud to offer this top-of-the-line higher-oil-consumption-issue solution to our customers, and we're not the only ones who think it's a great choice. 

Is an Air oil separator necessary?

An AOS is a vital component for any car, especially for high performance engines. By retaining the OEM PCV valve while separating the oil out of the head ventilation air, a proper AOS allows for the removal of oil from the engine ventilation system so the oil doesn't get sent to the intake system. This addition helps to extend the life of the engine and reduce the chance of oil consumption. A well-designed AOS can keep your engine running smoothly and make sure that it's always performing at its best. It's amazing how one small component can make such a big difference in your car's overall performance.

Grimmspeed AOS Review

We've received countless positive reviews from satisfied customers who have found that the Grimmspeed air oil separator meets all of their needs and more. Whether you're a performance enthusiast looking to take your ride to the next level or simply in need of a reliable solution to keep your engine running smoothly, the Grimmspeed air oil separator is the perfect choice for you.

Check out the Grimmspeed air oil separator review screenshots below.

Grimmspeed AOS review #1

As "N.B." pointed out, if you're in the market for some new automotive parts, you want two things: a quality product and fast shipping. Thankfully, MAPerformance offers both with their solid air oil separator product and lightning-fast shipping. With reliable products from trusted brands like Grimmspeed, you can rest easy knowing your car is in good hands. Plus, with quick shipping, you won't have to wait around for your parts to arrive. Get back on the road faster and with better performance with MAPerformance.

Grimmspeed AOS review #2

Not only is the Grimmspeed air oil separator designed to quickly improve your engine's efficiency and effectively lowers oil count where it shouldn't be, but its simple installation process means you can stop worrying about separating the oil from the engine and spend less time in the garage and more time on the racetrack. The Grimmspeed team understands that every second counts on the track, and that's why they've made their air oil separator installation process so user-friendly. So, whether you're a pro racer or just enjoy hitting the track for some weekend fun, the air oil separator has one job that is sure to give your car the performance boost it deserves, while also making your life a whole lot easier.Grimmspeed AOS review #3

When it comes to purchasing a new product, whether it's for your car or your home, the installation process can be a daunting task. That's why we were thrilled to receive such a wonderful review from Brandon about the product. Not only does Brandon express his love for the product, but he also highlights how easy the installation process was. Grimmspeed takes it a step further by providing a video tutorial to ensure performance drivers have a stress-free installation experience. It's great to see a company go above and beyond for their customers, and it's no surprise that Brandon is happy with his air oil separator purchase. Thanks for sharing your positive review, Brandon, and happy driving!

Grimmspeed AOS Install

If you're looking for an easy and efficient way to protect your engine ventilation system from harmful blow-by gases, look no further than this complete AOS. This video showcases just how simple the installation process can be to have a proper running system. With clear and concise instructions, you'll have the AOS, a very compact unit, installed in no time. The benefits of using an air oil separator are clear: reduced carbon buildup, increased engine performance, and extended engine life. And with Grimmspeed's commitment to quality, you can trust that their air oil separator will deliver on all fronts. Give your engine ventilation system the protection it deserves with Grimmspeed's air oil separator.

Grimmspeed AOS Problems

When it comes to the Grimmspeed air oil separator, one common culprit is the pesky condensation that can occur upon installation. When you open your car's hood, you might notice a milky oil substance (a minimal milky substance) or possible sludge in the OEM oil cap or on the dipstick. This is known as oil vapors and water emulsion. It occurs when oil and water become aerated, typically due to water vapor present in the crankcase from the blow-by of combustion gases.

The oil vapors, on the other hand, come from separating the oil and crankcase. While this may seem concerning, it is simply a sign of condensation and is not necessarily indicative of a serious problem separating the crankcase and head ventilation the oil, like oil building. However, if you notice an excessive amount of it, it may be a sign of a more significant issue with your engine's cooling or lubrication system. In any case, it's always best to have a professional mechanic diagnose the issue to ensure the longevity and reliability of your vehicle.

Grimmspeed's TMIC

When it comes to high-performance engines, the cooling system is crucial. That's why the Grimmspeed TMIC is such a game-changer. It's truly a compact unit that packs performance cooling power. While your OEM TMIC/stock form might be sufficient for everyday driving, it falls short as soon as you try to push your car's limits on the track with its mediocre intercooler piping.

Heat-soak quickly becomes an issue, leading to decreased performance and, eventually, damage to your engine.

Fortunately, the Grimmspeed TMIC is engineered to handle even the most extreme conditions. Its high-quality construction and efficient design keep your engine running cool no matter what.

So if you want to take your car to the next level, the Grimmspeed TMIC is the answer you've been looking for.

Grimmspeed TMIC Install

Installing the GrimmSpeed TMIC is a breeze. The folks at GrimmSpeed pride themselves on providing a quality product, and it shows in the ease of installation.

Whether you're using your stock STI y-pipe or one of their cast aluminum y-pipe kits, the process is straightforward and hassle-free. Plus, with 5-ply silicone couplers and t-bolt clamps for each connection, you can be sure that everything will stay securely in place.

So if you're looking to boost your ride's performance and want a TMIC that's easy to install, look no further than GrimmSpeed.

Grimmspeed's FMIC

Grimmspeed Front Mount Intercoolers have become one of the most sought-after products in the aftermarket industry, and for good reason. These innovative heat exchangers have excelled when it comes to constructing exceptional high-performance intercoolers.

The renowned name of Grimmspeed has become synonymous with quality, efficiency, and excellence. With their well-deserved reputation for producing top-of-the-line products, Grimmspeed FMICs have become the go-to choice for anyone seeking the best in intercooler technology.

So, whether you're a professional racer or an avid enthusiast, you can trust Grimmspeed to provide you with a product that is sure to exceed your expectations.

Grimmspeed FMIC Install

Upgrading your car's intercooler can give your engine a much-needed boost in performance, but the installation process can seem daunting. Luckily, Grimmspeed has your back with their comprehensive install video for their front mount intercooler. This step-by-step guide covers everything you need to know to get your intercooler installed properly and functioning at its best. With easy-to-follow instructions and clear visuals, you'll feel confident tackling this upgrade on your own. So why not give your car the added performance it deserves with Grimmspeed's front-mount intercooler?

Grimmspeed TMIC vs FMIC

Performance enthusiasts always look for ways to improve the power of their vehicle. Intercooler upgrades are one of the most common modifications, but choosing between a top-mount intercooler unit compared to the front-mount intercooler can be a task on its own.

Finding the right intercooler products that fit your car and your driving style is crucial. At Modern Automotive Performance, we understand that the perfect fitment of your intercooler is essential to get those extra ponies under the hood. Whether you’re planning to build past the standard stage 2 or just looking for a performance upgrade, we’re here to help you demystify the selection process and get the most out of your vehicle.


While both serve the same purpose of cooling the air that enters your engine, there is a key difference in how they go about it. The top-mount intercooler has the advantage of more space to breathe, allowing the cylinders to fire with less lag. On the other hand, a front-mount intercooler has considerably more distance to travel between both, which can lead to a slight delay. While this difference may not be noticeable when putting the pedal to the metal, it definitely matters for those who use more advanced tools.

So, whether you're a performance enthusiast or a casual driver, understanding the differences between these two types of intercoolers can make a significant impact on your driving experience.

A TMIC may be hotter than other options due to their close proximity to the engine, and are more vulnerable to damage during installation or maintenance. While driving, a top-mount intercooler may struggle to keep up with cooling charge temperatures compared to front-mounted intercoolers. However, there are some benefits to a top-mounted cooler, mainly their efficiency with airflow. Due to the shorter path from your turbochargers to intake, they can deliver air quicker and with more pressure. Just be sure to weigh the pros and cons before making your decision between the two.

Grimmspeed's BPV

When it comes to aftermarket automotive performance parts, Grimmspeed Bypass Valves are a top pick for many car enthusiasts. These valves have gained popularity due to their ability to not only enhance a vehicle's performance with a powerful punch but also increase its reliability. It's this focus on quality and long-lasting durability that sets Grimmspeed apart from the competition. Whether you choose the BPV or BOV, you can trust that you're getting a solid and reliable component for your car. With Grimmspeed on your side, your ride just got a whole lot better.

Grimmspeed BPV by MAPerformance

Grimmspeed BPV STI

If you're an enthusiast looking to get more out of your Subaru STI, the Grimmspeed BPV for the STI is a smart investment. With its high-quality construction and design, this performance upgrade ensures that your STI is operating at its full potential. The Grimmspeed BPV is a reliable choice, providing consistent boost control and preventing compressor surge. And, let's be honest, who doesn't want a smoother driving experience? Say goodbye to hesitation and hello to better throttle response. Whether you're hitting the road or the track, the Grimmspeed BPV will elevate your Subaru vehicles performance to the next level.

Grimmspeed BPV WRX

The Grimmspeed BPV for the WRX is the perfect addition to any Subaru driver's arsenal. If you're looking for an upgrade that will give you a noticeable boost in performance, then look no further than the Grimmspeed BPV. This high-quality piece of equipment will take your driving experience to the next level, making your WRX ride feel smoother and more responsive than ever before. Not only is this BPV reliable and durable but it's also designed to be easy to install, so you can have your upgraded ride up and running in no time. Invest in the Grimmspeed BPV for your WRX, and you won't be disappointed.

Grimmspeed's Boost Controllers

If you're looking to take your car's performance to the next level, look no further than these boost controllers. These controllers are designed with precision engineering in mind, utilizing only the highest quality materials and manufacturing techniques. With a Grimmspeed boost controller, you'll achieve optimal performance from your vehicle, with reduced turbo lag and wheel spin.

Grimmspeed Boost Controllers by MAPerformance

You'll be able to push your car to its limits without sacrificing comfort or efficiency. So, if you're ready to take your driving experience to the next level, give the boost controllers a try.

Grimmspeed boost controller WRX

Are you looking to take your WRX to the next level? Look no further than Grimmspeed's boost controllers. Designed to provide optimal vehicle performance, these controllers allow you to fully maximize the power capabilities of your engine while maintaining a comfortable and efficient driving experience. Don't settle for less when it comes to your vehicle's performance - upgrade with Grimmspeed's boost controllers and feel the difference yourself.

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Evo 8 Grimmspeed boost controller

Are you tired of feeling like your car could be performing better, but not sure how to make the most of its power capability? Look no further than Grimmspeed's boost controllers for the Evo 8. These controllers allow you to fine-tune your vehicle's performance, maximizing its potential in a way that feels both comfortable and efficient. Whether you're looking to enhance your car's overall speed or simply get a boost when you need it most, Grimmspeed's boost controllers offer the perfect solution. Don't settle for subpar performance any longer - upgrade your Evo 8 today with Grimmspeed's boost controllers.

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Evo x Grimmspeed boost controller

Unlock the full potential of your Evo X with Grimmspeed's boost controllers. With cutting-edge technology and precision engineering, these controllers allow you to fine-tune your vehicle's performance and extract every last drop of power from your engine. Whether you're racing on the track or simply looking for a more exciting driving experience, Grimmspeed's boost controllers can help you achieve your goals. So why settle for average when you can get the boost you need with Grimmspeed? Upgrade today and experience the difference for yourself.

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Grimmspeed manual boost controller review

We're incredibly proud to offer the Grimmspeed boost controller here at MAPerformance. Customer reviews are raving about its effectiveness and durability. It's no wonder why so many car enthusiasts trust this product to effectively control their boost levels. Don't just take our word for it, check out the reviews yourself and see what all the hype is about.

 Grimmspeed boost controller review #1

We not only offer a solid product, but our customers also rave about our lightning-fast shipping. We understand that waiting around for parts to arrive can throw a wrench in your plans, which is why we make sure to ship your order out as soon as possible. Because at the end of the day, we want to help you get back on the road and pushing the limits of your ride.

Grimmspeed boost controller review #2

Thanks, Robert! For sure – this product boasts accuracy and hassle-free operation, which is music to any car enthusiast's ears. The sleek design allows for easy installation and provides a high level of customization to meet your specific needs. With the added bonus of being carried on our shelves, you can trust that this product will give you the performance you crave without the headaches.

Bonus – Grimmspeed Turbo Inlet

The Grimmspeed turbo inlet is a high-quality upgrade and is essential for anyone who wants to experience faster acceleration and improved performance on the road. Made from A380 aluminum and meticulously machined to perfection, you can be confident that this inlet will deliver the needed airflow to your turbocharger, ensuring it works at its full capacity. But the benefits don't stop there.

Grimmspeed turbo inlet by MAPerformance

The Grimmspeed turbo inlet is built for durability, meaning you won't have to worry about bending, cracking, or breaking even after miles of use. Say goodbye to slow acceleration and hello to a more powerful drive with the Grimmspeed turbo inlet.


Renowned for their superb quality and cutting-edge technology, Grimmspeed is the go-to brand for discerning car enthusiasts – whether you're working on a street car, track car, or their daily driver. Their extensive range of products has something for every need, from intake systems and exhausts to performance tuning software and accessories. With Grimmspeed, you can be sure that you'll never compromise on performance or quality. And if you have any questions, our experienced customer service and sales team are always at hand to provide expert advice and support. So why wait? Call us now at 1-888-MAPerformance and experience the best in automotive performance.

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