Replacing the air filter is the basic step in tuning your intake system!
Replacing the intake system filter is a standard part of tuning motorcycles and cars. By changing to a high-performance filter that allows for smoother intake, the amount of air taken in by the fuel injector (or carburetor) that supplies the air-fuel mixture to the engine can be increased efficiently. This is a basic technique for tuning intake systems that ultimately leads to increased power.
The basic tuning method for the intake system by replacing the filter is as follows:
1: Use the original air cleaner box and replace it with an aftermarket filter.
Sportiness ☆ Practicality ☆☆☆
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2: Remove the original air cleaner box and replace it with an aftermarket air filter.
Sportiness ☆☆ Practicality ☆☆
Bonus: Remove the stock air cleaner box and replace it with an aftermarket air funnel that draws in air directly.
Sportiness ☆☆☆ Practicality ☆
Here, we researched the differences and features between genuine air filters and sports-type air filters, using the ultra-high performance air filter released by BMC, which combines practicality and sportiness, as an example.
What is BMC, the prestigious Italian manufacturer of intake system parts?
BMC booth at Tokyo Auto Salon 2025.
There are many different types of air filters available from various manufacturers, and some beginners may be unsure which one to choose.
The photo shows an air filter from BMC (Bologna Motor Company), which is also used as an original part by Ferrari, Lamborghini, and Porsche. It is also used in racing vehicles such as those in the top motorcycle racing category, MotoGP, and the top car racing categories, F1 and WRC. It features a passionate and aggressive red exterior.
Headquartered in Italy, BMC was founded in 1973 as an importer of automotive products. In 1976, it produced racing bikes for the TT1 Championship 1000 class (now known as Superbike). The company also manufactured and sold motorcycle air filters, but its innovative technology and high quality were well-received in the motorcycle industry, and the company eventually expanded into the four-wheel vehicle market.
In 1995, the company received a request from the prestigious Italian automaker Ferrari to manufacture air filters for its F1 cars, and after overcoming numerous obstacles, it succeeded. This made BMC, which was previously unknown in the field of air filters, an instant hit.
Since then, they have developed intake systems using carbon, and have now established themselves as a global leader in intake system parts.
●BMC Air Filters https://www.bmcairfilters.com/
At the BMC booth, the No. 87 METALIVE S Lamborghini GT3 (Huracan GT3 EVO2), a car competing in the 2024 Super GT GT300 class, was on display. The car was already fitted with a BMC air filter. The greatest appeal of BMC air filters is their combination of high intake efficiency and high dust collection capacity.
BMC’s “wet type” air filter minimizes intake resistance and maintains maximum air flow.
BMC’s air filter, finished in Italian red, not only brings out the potential of your car, but also adds a special accent to the intake system.
Generally, most genuine air filters use the low-cost “dry type.” On the other hand, BMC air filters use the “wet type.” This wet type has a multi-layer structure mainly made of cotton gauze and is coated with special oil, which provides better permeability, filtration, and retention than dry types.
By the way, why is the oil-coated wet type more efficient than the dry type? Generally, if an air filter focuses too much on preventing foreign matter (debris) from entering, the intake efficiency will decrease. However, BMC products…
Small particles such as dust, rubber, and metal powder generally carry a negative charge. In contrast, the main material of BMC filters, cotton, carries a positive charge. When particles try to pass through the oiled filter, they are captured by the positively charged cotton.
The oiled cotton fibers hold the trapped particles firmly in place, allowing air to pass through without impeding the flow of air. This allows the BMC filter to block a variety of foreign particles while minimizing inhalation resistance and maintaining maximum airflow.
Here are the key points of BMC air filters!
The key features of BMC air filters are: 1) 2) 3) They offer superior filtering performance that exceeds that of dry filters, and also offer low airflow resistance.
①透過性......フィルターを通し、どれだけ多くの空気を通過させられるか
②ろ過性......空気とともに吸われる異物を通さず、キレイな空気のみを通す
③保持性......フィルターで捉えた異物を捉えたまま離さず、空気の流れを妨げないBy realizing the above ①②③,
A: Ensures excellent airflow and significantly improves engine intake efficiency, thereby improving engine performance.
B: Reliably removes dust and debris, extending engine life.
If the air filter becomes dirty, it is generally replaced with a new one if it is an original part. However, BMC products can be washed and maintained, so they can be used for a long time and running costs are reduced. Unlike disposable filters, they also contribute to reducing waste.
BMC air filters come in a variety of types, including genuine shape types that can be simply replaced with the genuine air filter, conical filters that connect and secure directly to the fuel injector intake port, and full-fledged air boxes that use carbon boxes.
OTA kit for Suzuki Jimny (center)
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For Toyota Yaris
Left: For Nissan GT-R Right: For Nissan Fairlady Z
For Porsche 911
For Ferrari SF90
For Audi A4
A wide range of products for both four-wheel and two-wheel vehicles
The above air filters are only for automobiles, but BMC air filters, which are also used in MotoGP machines, the pinnacle of motorcycle racing, are available in a wide range of motorcycles, including Honda, Yamaha, Suzuki, and Kawasaki in Japan, and Ducati, BMW, KTM, and others overseas.
*Please check the lineup for cars and motorcycles on the following website .
Air filters are consumable parts that are prone to dirt and deterioration over time. When it’s time to replace your air filter, be sure to check out BMC air filters, which can improve performance!
●BMC Air Filters https://www.bmcairfilters.com/
The manufacturer used by top teams in F1, Super GT, and MotoGP will be exhibiting for the first time! Three reasons why you can’t miss the BMC booth [Tokyo Auto Salon 2025]BMC, which will be exhibiting at the Tokyo Auto Salon for the first time, is a highly skilled manufacturer known only to those in the know and is definitely worth checking out if you’re a car enthusiast. Their products are used by prestigious brands such as Ferrari, Lamborghini, and Porsche, and have been installed in numerous championship-winning machines in the racing world. But who exactly is BMC?
The secret to the Super GT GT300 champion Lamborghini GT3’s strength lies in BMC’s air filter! [Tokyo Auto Salon 2025]Tokyo Auto Salon 2025, the world’s largest custom car event and a mid-winter tradition, is back again this year! The venue is packed with all sorts of car-related content, including demo cars, car accessories, custom parts, tools, and more. Here, we’ll give you a glimpse of the atmosphere of the event, bringing you a look at the booth of BMC, an air filter manufacturer from Italy.
