An Air Cleaner Kit, also called a cold air intake (CAI) or performance intake system, replaces your vehicle's restrictive factory air box and paper filter with a high-flow filter and smooth mandrel-bent tubing. It allows the engine to draw in more air, improving combustion efficiency, throttle response, and producing a more aggressive induction sound.

A performance air cleaner kit increases airflow to your engine, which can improve throttle response, add horsepower and torque, enhance intake sound, and potentially improve fuel efficiency. It also replaces disposable paper filters with a reusable unit that can be cleaned and maintained, saving money over time. Under-hood appearance improves with polished or coated tubing.

Most vehicles see gains in the range of 5–15 horsepower and 8–12 lb-ft of torque, depending on engine and existing restrictions. Gains are most noticeable in throttle response and mid-range power. Results vary by vehicle — engines with more restrictive factory intake systems typically see larger gains. Pairing with an exhaust upgrade maximizes overall performance.

Yes, you'll hear more intake noise during acceleration — that classic performance induction growl. On turbocharged vehicles, the turbo spool and whoosh sound becomes significantly more prominent. The sound is most noticeable under hard throttle and adds to the driving experience without being intrusive at cruise.

Cold air intakes position the filter in a cooler area (often behind the bumper or in the fender) for denser air. Installation is more involved but can offer better performance. Short ram intakes attach the filter directly to the throttle body or MAF sensor. They're easier to install, produce more induction noise, but draw warmer engine bay air. Choose based on your priorities: maximum performance (cold air) or sound and simplicity (short ram).

Most modern air cleaner kits are designed to work with your factory ECU calibration without issues. They bolt on and deliver immediate benefits. However, for maximum performance gains — especially on newer vehicles with sophisticated ECUs or when combined with other modifications — a custom tune can optimize air-fuel ratios and timing. Tuning is not required but recommended for enthusiasts seeking every bit of power.

Most quality air cleaner kits are 50-state street legal because they do not remove or defeat emissions equipment. Some kits carry CARB certification (Executive Order number) for states with strict emissions requirements like California. Always check if the specific kit includes CARB documentation if required in your area. Noise ordinances may apply separately.

Oiled filters (cotton gauze) use a light oil coating to trap particles. They typically offer the best airflow and can be cleaned and re-oiled multiple times. Dry filters use electrostatic or synthetic media and require no oiling — just clean and reuse. Both provide excellent filtration when properly maintained. The choice comes down to maintenance preference: oiled filters require re-oiling after cleaning; dry filters are simpler but may need replacement sooner.

XKV air cleaner kits feature mandrel-bent aluminum tubing for smooth, consistent airflow — available in polished, powder-coated, or anodized finishes. Filters use high-flow cotton gauze, foam, or dry synthetic media depending on the application. Kits include all necessary brackets, clamps, silicone couplers, and installation hardware. Heat-shield options are available on select applications to protect the filter from engine bay heat.

Yes, most kits are designed for straightforward DIY installation with basic hand tools. Installation typically takes 30–90 minutes depending on your vehicle and involves removing the factory air box and installing the new components. Detailed instructions are included. For cold air intakes that require bumper or fender liner removal, the process takes longer but is still manageable for most enthusiasts.

Most reusable performance filters should be cleaned every 30,000–50,000 miles under normal driving conditions, or more frequently if you drive in dusty environments. Cleaning kits with specific solutions are available for proper maintenance. Oiled filters require re-oiling after cleaning; dry filters can be cleaned with water and mild detergent. Regular maintenance ensures optimal performance and engine protection.

Fitment varies by year, make, model, and engine size. Use the Year/Make/Model selector on the product page to check compatibility with your specific vehicle. Pay attention to engine details (e.g., 5.0L vs. 5.7L) and any emissions equipment that may affect fitment. If you're unsure, contact our customer support with your VIN and we'll help verify.

All XKV Racing air cleaner kits come with a 2-year warranty against manufacturing defects. We offer 30-day hassle-free returns and exchanges on unused items, with fast shipping from US warehouses. If you have any issues with fitment, quality, or need assistance, our customer service team is ready to help.