Your stock 350z airbox are not cutting it with the performance than upgrade yourself to a Stillen Hi-Flow Airbox. The Stilen Hi-Flow airbox will keep your engine cool and add additional power. The first step in upgrading your car's performance is to replace the restrictive stock air box with a Stillen Hi-Flow Airbox. Additional air flow increases the engine's efficiency and power output by increasing the quantity of the air and fuel ratio. The Stillen Hi-Flow Airbox consists of a either a precision machined ring and a gauze element with cleanable filter or the newer Stillen Hi-Flow Airbox cone filters which incorporate a velocity stack which uses the venturi effect to accelerate airbox speed.  Power and throttle response will improve throughout the entire RPM range. Your best dollar per horsepower investment by far is Stillen Hi-Flow Airbox. Most people find the authoritative note of the intake pleasing, but note that increased noise levels will result. Most Stillen Hi-Flow Airbox is CARB approved, while others are currently CARB Pending, and may not be 50 state legal until approved. Clean your filter regularly for best results. The venturi ring acts as a velocity stack, speeding up and directing the airflow into the intake chambers, making more useable and noticeable power. The Intake System also lends a more aggressive tone to your Nissan when pressed, but remains unobtrusive at idle. The Stillen Hi-Flow Airbox system is the perfect way to add an edge to your Nissan.

• Stillen Hi-Flow Airbox with your car will be tuned to accelerate and perform with much more freedom
• Stillen Hi-Flow Airbox smoothes and straightens huge volumes of incoming air, allowing your engine to breathe deep and roar loud
• Stillen Hi-Flow Airbox are engineered for a perfect fit

If you like to learn more and improve the performance on the Nissan 350z with Stillen Hi-Flow Airbox please visit us at 350zEvolution.com.