Why Choose Our Performance Systems?

We’re not just in the business — we helped build it. Our team developed components for GM, Ford, and Stellantis, and supplied high-performance systems directly to them. Now, we bring that same engineering expertise to the aftermarket. You get the best of both worlds: OEM-grade quality with enthusiast-level performance.

Quick & Easy Installation

OEM factories require parts that install quickly and easily. We’ve applied that same thinking to our systems. With clearances, ergonomic design, and pre-assembled components, even first-time installers can expect a hassle-free experience in under 30 minutes. The hardest part? Removing the stock parts.

Cold Air = More Power

Cooler air is denser air, and more oxygen means more power. For every 10°F drop in inlet air temperature, you gain about 1% in horsepower.

SAE Correction Factor (J1349):

CA = √(T_ref / T)

Where:
– T_ref = Reference Temperature (Standard: 298K or 25°C)
– T = Actual Intake Air Temperature (in Kelvin)

Example:
If your engine is rated at 400 HP at 77°F, dropping the intake temp by 10°F nets approximately 4 additional horsepower.

Superior Airflow = More Horsepower

We used SAE J1349 formulas to compare flow data. Our intake system showed a 46.67% flow improvement over OEM — translating to an 8 HP theoretical gain.

Rule of Thumb:
1.07 HP gain per 1 in H₂O restriction drop

Some competitors advertise higher airflow but compromise filtration or draw in hot air. We optimize flow and filtration, ensuring performance without shortcuts.

Tuned for Real Performance

Short-runner designs, like ours, increase high-RPM horsepower by minimizing pressure wave interference. Our 9L plenum acts as an air reservoir, ensuring a steady flow of clean air — tuned for peak power in GM’s 5.3L and 6.2L engines.

Filtration You Can Trust

We meet tough OEM specs using ISO 5011 with fine dust, not the easier coarse dust used by others. Our Walker Performance Filters trap over 99% of harmful particles, protecting your engine without choking airflow.

Real Cold Air, Not Hot Engine Air

Some systems pull hot under-hood air just to show high flow on paper. Ours doesn’t. We draw cool air from a high-pressure area at the front of the vehicle. Thermoplastics and short runners minimize heat soak and recover quickly when moving.

Note: Heat transfer happens over time. At high airflow (like full throttle), there’s little time for heat to enter the stream. Our design balances size and material to keep intake temps near ambient.

Sound That Matches the Power

Factory intakes are quiet by design. Ours are engineered for enthusiasts — giving you that powerful intake sound without letting in hot air. It’s all performance, no compromise.

Bonus: Fuel Economy

Drive conservatively and you might see MPG gains. Cold air helps combustion, but the real-world improvement depends on how you drive.

OEMs track this using Rise Over Ambient: The difference between intake air temp and outside temp. Lower is better.

To Learn More

Visit our OEM supplier at: http://www.naassembly.com