Infinity Designs E9X M3 Intake

Infinity Designs E9X M3 Intake: A Technical Review by WBS Motorsports

At WBS Motorsports, we specialize in sourcing and testing high-performance parts for BMW M cars. The Infinity Designs E9X M3 intake is a product that immediately caught our attention, and after installing it on our own shop E90 M3, we can confidently say that it is one of the best options available on the market.

Shipping and Packaging

Infinity Designs impressed us with their exceptional shipping speed and attention to detail in packaging. The intake arrived extremely quickly, and the unboxing experience reflected the premium quality of the product. It was securely packed into two very nicely branded bags, further wrapped in Styrofoam packing sheets to prevent damage during transit. Additionally, the package included a certificate of authenticity with a matching serial number to the intake box, reinforcing the exclusivity and quality of the product.

Fitment and Installation

One of the most crucial aspects of any aftermarket intake is its fitment, and Infinity Designs has perfected it. The intake installs seamlessly without modifications, utilizing all the factory mounting points. This ensures a hassle-free installation process, whether you're a DIY enthusiast or prefer professional installation. The kit includes all necessary hardware, making this upgrade easy for any E9X M3 owner.

Design and Construction

Infinity Designs has reworked the factory airbox to allow for a larger inlet tube, maintaining a consistent cross-sectional area from the plenum opening. This design enables increased air volume and smoother airflow, contributing to improved efficiency. The intake features a fully sealed, pre-preg carbon fiber construction, enhancing both durability and aesthetics.

Air Filtration

The system incorporates a bespoke, high-surface-area air filter with a 170mm (6 3/4") opening. Positioned in front of the inlet tube, this filter creates a large velocity stack, promoting optimal laminar flow. The design maximizes airflow while maintaining effective filtration, ensuring clean and efficient air delivery to the engine.

Performance Benefits

While aesthetics are important, the primary purpose of an intake is to improve airflow and engine efficiency. The Infinity Designs intake optimizes air velocity, reduces turbulence, and provides a more direct path for incoming air. The result? Improved throttle response and a more pronounced induction sound that enhances the E9X M3 driving experience. We have seen several very positive reviews specifically praising the enhanced induction noise, which adds to the overall enjoyment of the car. Additionally, dyno testing has shown an increase of 10-12 crank horsepower and 8-10 lb-ft of torque between 6,000 and 8,300 RPM, further validating the performance benefits of this intake. Notably, the intake retains factory-like inlet temperatures, preventing heat soak issues that can diminish performance.

Availability and Future Offerings

At WBS Motorsports, we don’t just sell parts—we test them. The Infinity Designs E9X M3 intake exceeds our expectations in fitment, finish, and performance. While we currently do not offer this intake, we are actively exploring options to carry it in the future. If you're looking for a high-quality intake that delivers real-world benefits, this is one to keep on your radar.

We proudly recommend the Infinity Designs intake to our customers and fellow enthusiasts. If you're interested in upgrading your E9X M3 with this intake or have any questions, don’t hesitate to contact us at WBS Motorsports—we’re here to help you get the best for your BMW.