Description
Performance Air Intake Kit for 1991-1994 Nissan 240SX S13 2.4L KA24DE
This Air Intake System is precision-engineered to maximize the performance of your 1991-1994 Nissan 240SX S13 equipped with the 2.4L 4-cylinder KA24DE engine. By optimizing the air intake path with a high-flow 2.75" aluminum tube, this kit significantly boosts horsepower and torque while sharpening throttle response. It is a direct-fit upgrade for Coupe, Hatchback, and Convertible models, providing a perfect balance of performance and engine protection. Easy to install with no cutting or drilling required, this kit is the essential upgrade to unlock the true potential of your S13 legend.
Fitment:
| Year | Make | Model | VehicleType | Liter | Cylinders | BlockType | EngineVersion | SubModel |
|---|---|---|---|---|---|---|---|---|
| 1991 | Nissan | 240SX | Car | 2.4 | 4 | L | N/R | SE |
| 1991 | Nissan | 240SX | Car | 2.4 | 4 | L | N/R | LE |
| 1991 | Nissan | 240SX | Car | 2.4 | 4 | L | N/R | Base |
| 1992 | Nissan | 240SX | Car | 2.4 | 4 | L | N/R | SE |
| 1992 | Nissan | 240SX | Car | 2.4 | 4 | L | N/R | Base |
| 1992 | Nissan | 240SX | Car | 2.4 | 4 | L | N/R | LE |
| 1993 | Nissan | 240SX | Car | 2.4 | 4 | L | N/R | Base |
| 1993 | Nissan | 240SX | Car | 2.4 | 4 | L | N/R | SE |
| 1994 | Nissan | 240SX | Car | 2.4 | 4 | L | N/R | SE |
Specifications:
- Brand: Flashark
- Type: Performance Air Intake Kit
- Style: High-Flow Intake System (Non-Heat Shield)
- Tube Diameter: 2.75 Inch
- Color: Gloss Black Pipe | Red Filter
- Material: Lightweight Aluminum Piping
- Filter: High-Flow Dry Filter (Washable and Reusable)
- Compliance: NO CARB (Not for sale or use in California)
Features:
- Increased Performance: Engineered to boost 5-10 HP and 6%-8% Torque, providing a noticeable difference in acceleration and pulling power.
- Advanced Piping Design: Features a mandrel-bent 2.75" aluminum intake pipe. Unlike inferior kits with sharp bends, our design ensures smooth, laminar airflow to prevent turbulence and eliminate the risk of a Check Engine Light (CEL).
- Engine Protection: The kit includes a high-quality dry cone filter that shields your engine from harmful debris and contaminants while maintaining maximum air intake.
- Aggressive Sound: Enhances the induction sound of your KA24DE, delivering an intense, deep sporty tone under acceleration.
- Superior Response: Significantly improves throttle response across the low- and mid-RPM range for a more spirited driving experience.
- Reusable Filter: Upgraded to a washable and reusable dry air filter. No oiling is required, ensuring your Mass Air Flow (MAF) sensor stays clean and functional.
- Complete Kit: All necessary mounting accessories, silicone couplers, and heavy-duty clamps are included—exactly as shown in the picture. No additional parts required for installation.
How Does the Air Intake System Work?
The Air Intake System for your 1991-1994 Nissan 240SX S13 works by replacing the restrictive factory air box with a high-flow, 2.75-inch mandrel-bent aluminum tube and an open-element filter. The process begins at the high-flow cone filter, which draws in a larger volume of air while trapping micro-contaminants. The air then travels through the precision-curved aluminum pipe, specifically designed to maintain constant velocity and pressure. This ensures that the air passing over the Mass Air Flow (MAF) sensor is stable and laminar, allowing the ECU to accurately calculate the air-to-fuel ratio without triggering a CEL. Finally, the optimized airflow reaches the throttle body, leading to more efficient combustion, increased explosive horsepower, and a much sharper engine response. It’s the ultimate combination of style, sound, and S13-specific performance.
Nissan 240SX S13 2.4L KA24DE Air Intake Kit FAQs
Q1: Will this air intake kit fit my 1992 Nissan 240SX S13 Convertible?
A1: Yes! This performance air intake kit is a direct-fit upgrade for all 1991-1994 Nissan 240SX S13 models equipped with the 2.4L DOHC KA24DE 4-cylinder engine. It seamlessly fits Coupe, Hatchback, and Convertible body styles.
Q2: How much horsepower and torque can I expect to gain?
A2: By replacing the restrictive factory air box with our high-flow 2.75" mandrel-bent aluminum tube, you can expect an estimated boost of 5-10 HP and a 6%-8% increase in torque. This translates to noticeably sharper throttle response and better pulling power.
Q3: Will installing this S13 air intake trigger a Check Engine Light (CEL)?
A3: No, it will not. Our intake piping is precision-engineered to provide smooth, laminar airflow over the Mass Air Flow (MAF) sensor. This ensures the ECU accurately calculates the air-to-fuel ratio, completely eliminating the risk of triggering a CEL.
Q4: Do I need a professional mechanic to install this kit?
A4: Not at all! This kit is designed for a hassle-free, bolt-on installation with no cutting, drilling, or fabrication required. It comes with all necessary hardware, and a basic hand tool set is all you need to complete the job in your garage.
Q5: Does this KA24DE intake system require an ECU tune?
A5: No ECU tuning or remapping is required. This high-flow intake system is optimized to run perfectly on the factory Nissan 240SX ECU mapping while still delivering substantial improvements in performance and engine response.
Q6: How will this intake affect the sound of my Nissan 240SX?
A6: One of the most immediate benefits you will notice is the sound. The open-element filter and aluminum piping significantly enhance the induction sound of your KA24DE, delivering an intense, deep, and aggressive sporty tone under heavy acceleration.
Q7: Is the included air filter oiled or dry? How do I clean it?
A7: This kit includes a premium high-flow dry filter. Dry filters are superior because they require no oiling, which protects your delicate MAF sensor from contamination. To clean it, simply wash it with mild soap and water, let it air dry completely, and reinstall.
Q8: Why does this kit use aluminum piping instead of plastic or rubber?
A8: We use 2.75-inch mandrel-bent aluminum piping because it prevents structural collapse under high vacuum, dissipates heat effectively, and provides a perfectly smooth interior surface. This prevents air turbulence, ensuring maximum air velocity straight into your throttle body.
Q9: Is this air intake system CARB compliant for use in California?
A9: No. This performance air intake kit is strictly NO CARB. It is not legal for sale or use on pollution-controlled motor vehicles in California or in states that have adopted California emissions standards. It is intended for off-road or track use only in those areas.
Q10: My S13 has an engine swap (SR20DET/KA24E). Will this intake fit?
A10: No. This specific air intake kit is exclusively engineered for the 1991-1994 Nissan 240SX S13 equipped with the naturally aspirated 2.4L DOHC KA24DE engine. It will not fit the 1989-1990 SOHC KA24E or any JDM engine swaps like the SR20DET or CA18DET.
Q11: What exactly is included in the box? Do I need to buy extra parts?
A11: The kit includes everything you need for a complete installation: the gloss black aluminum intake pipe, a washable red dry cone filter, premium silicone couplers, heavy-duty clamps, and mounting accessories. No additional parts are required.