Cold Air Intake Kit for 2012-2015 Honda Civic Si with 2.4L 4-Cylinder

Cold Air Intake Kit for 2012-2015 Honda Civic Si with 2.4L 4-Cylinder

Fitment:

Specifications: 

Brand: Flashark 
Type: Cold Air Intake
Include 1X Performance Cold Air Intake 
Style: Cold Air Intake 
Color: Black Coated Aluminum Pipe | Red Filter
Material: Aluminum Piping 
Filter: Washable and Reusable

Features:

• Made of high-quality aluminum material for strength and durability
  Lightweight high air flow racing performance spec. design
  
• Our air intake helps the engine to draw in more and colder air, resulting in better throttle response and higher explosive horsepower output
  
• Improves up to 95% filtration efficiency
  
• This intake kit can be set up in under 60 minutes using common tools.
  
• It increases horsepower by 5 to 10 percent and torque by 6 to 8 percent, and improves gas mileage. It also adds a sporty, aggressive engine sound for an enhanced driving experience.

2012–2015 Honda Civic Si 2.4L Cold Air Intake FAQ

Q1: What vehicles does this cold air intake kit fit?

A1: This Flashark cold air intake kit is designed for 2012, 2013, 2014, and 2015 Honda Civic models equipped with the 2.4L four-cylinder engine. The product page also lists 2013–2015 Acura ILX 2.4L applications. Confirm the engine size and original intake layout before ordering, especially if the vehicle has been engine-swapped or previously modified.

Q2: Does this intake fit a 2013 Honda Civic Si?

A2: Yes. A 2013 Honda Civic Si equipped with the factory 2.4L engine is included in the listed fitment. The kit replaces the factory intake assembly with a black-coated aluminum intake pipe and a reusable performance filter.

Q3: Will this cold air intake fit a 2015 Honda Civic Si?

A3: Yes. The product page lists the 2015 Honda Civic 2.4L as a compatible application. Verify that the car still uses the factory-style throttle-body position, sensor arrangement, and engine-bay layout before installation.

Q4: Does this intake fit the 2012–2015 Civic LX, EX, or HF with the 1.8L engine?

A4: No. This intake is designed for the 2.4L Civic Si engine and is not intended for Civic LX, EX, DX, or HF models equipped with the 1.8L engine. The 1.8L and 2.4L engines use different intake routing, pipe dimensions, mounting points, and sensor locations.

Q5: Will this intake fit a 2013–2015 Acura ILX 2.4L?

A5: Yes. The product page lists 2013, 2014, and 2015 Acura ILX models equipped with the 2.4L four-cylinder engine. It is not intended for ILX models with the 2.0L engine or hybrid powertrain, which use different intake systems.

Q6: Is this intake designed for the K24Z7 engine?

A6: The 2012–2015 Civic Si commonly uses the 2.4L K24Z7 engine, and this kit is marketed for the factory 2.4L Civic Si application. Because older cars may have replacement engines or modified intake manifolds, confirm the engine code and throttle-body layout before purchasing.

Q7: What is included with the Flashark Civic Si cold air intake?

A7: The product includes one performance cold air intake assembly with a black-coated aluminum pipe and a washable, reusable red air filter. Check the product images and supplied hardware before removing the factory airbox to confirm that all couplers, clamps, hoses, and mounting pieces are present.

Q8: Does a 2012–2015 Civic Si cold air intake require a tune?

A8: The engine may run with a correctly installed intake on the factory calibration, but a tune is often recommended when airflow characteristics or intake-pipe diameter differ significantly from stock. Hondata FlashPro or another suitable tuning solution can help correct fuel trims, optimize throttle response, and make better use of the intake, especially when combined with a header, exhaust, or other performance parts.

Q9: Can I install the intake without Hondata FlashPro?

A9: Physical installation does not require FlashPro, but drivability and performance depend on how closely the intake preserves the factory airflow readings. After installation, monitor idle quality, fuel trims, throttle response, and warning lights. If the engine runs lean, hesitates, or stores airflow-related codes, return to the stock intake until the setup can be inspected and properly calibrated.

Q10: How much horsepower can a cold air intake add to a 9th Gen Civic Si?

A10: Flashark lists potential gains of 5–10% horsepower and 6–8% torque, but actual results depend on the intake design, ECU calibration, engine condition, temperature, fuel quality, and supporting modifications. On an otherwise stock Civic Si, the most noticeable changes may be a stronger induction sound and improved high-RPM response rather than a guaranteed large peak-power gain.

Q11: Will this intake make my Civic Si louder?

A11: Yes. Replacing the sound-insulated factory airbox with an aluminum intake pipe and performance filter makes induction noise more noticeable. Expect a deeper growl during acceleration, a louder rush of air near wide-open throttle, and a more aggressive VTEC crossover sound at higher RPM.

Q12: Will the intake cause a check engine light or rough idle?

A12: A correctly installed and properly calibrated intake should not normally cause a persistent check engine light. Common causes after installation include a loose coupler, vacuum leak, disconnected breather hose, damaged sensor wiring, incorrect sensor placement, or airflow readings outside the factory ECU’s expected range. Scan the diagnostic code and inspect the complete installation before replacing parts.

Q13: Is a cold air intake better than a short ram intake for the Civic Si?

A13: A cold air intake places the filter farther from engine heat and may provide lower intake temperatures while the car is moving. A short ram intake usually offers easier installation, simpler filter access, and less water-exposure risk, but it may draw warmer engine-bay air at low speeds. The better choice depends on climate, driving conditions, desired sound, and tuning plans.

Q14: Can this cold air intake cause hydrolock in heavy rain?

A14: Hydrolock is possible if a low-mounted filter becomes submerged and draws a large volume of water into the engine. Normal rain usually does not cause this when the intake, fender liner, and splash shields are correctly installed, but deep standing water should always be avoided. A filter cover may reduce splash exposure, but it cannot make driving through deep water safe.

Q15: How long does installation take, and what should I check afterward?

A15: Flashark states that installation can typically be completed in under 60 minutes with common hand tools. Before starting the engine, confirm that all clamps are tight, every hose and sensor is connected, the filter is secure, and the pipe does not contact the battery, radiator fan, belts, bodywork, or hot engine components. After the first drive, recheck the clamps and inspect for rubbing or air leaks.