Thinking about adding more pep to your Subaru with an aftermarket intake? It's a popular mod, but there's more to consider than just horsepower gains. This guide will break down the different types of intakes, potential benefits and drawbacks, and help you decide if it's the right choice for your car.

Types of Aftermarket Intakes:

• Short Ram Intake (SRI): Draws air from the engine bay, potentially increasing air temperature. Offers easier installation but might not deliver the biggest power gains.
• Cold Air Intake (CAI): Draws cooler air from the fenderwell, potentially offering more power. However, some CAIs can be more susceptible to water ingestion.

Stock Intake vs. Aftermarket:

The stock intake on most turbocharged Subarus is actually quite capable, especially for moderate power levels. It offers several advantages:

• Water Resistance: The high-mounted scoop and fender snorkel design minimize water intake.
• Cool Air Flow: Draws in cool air from the fenderwell at speed.
• Quiet Operation: The resonator helps reduce intake noise.
• Optimized ECU Calibration: The engine computer is tuned to work perfectly with the stock intake system.

Downsides of Aftermarket Intakes:

• Reduced Filtration: Some aftermarket filters may allow more dirt and debris into the engine, potentially causing wear and tear.
• Water Ingestion Risk: Especially with CAIs, driving through water can damage the engine if water enters the intake.
• Air/Fuel Ratio Issues: Improper intake design can cause the engine to run lean or rich, leading to performance issues and potential damage.

Intakes and Engine Management:

Tuning can help correct some air/fuel ratio problems caused by aftermarket intakes. However, a "rich tune" to compensate for turbulence might not be ideal for your engine's health.

Alternatives to a Full Intake:

• Drop-in Air Filter: Offers some airflow improvement while maintaining the stock airbox's filtration and water resistance.
• Potential Power Gains: 0-15HP (results vary depending on dyno and car setup).
  

Before You Buy:

• Research: Consider your goals and the potential drawbacks of aftermarket intakes.
• Choose Wisely: Opt for reputable brands known for quality and good fitment.
• Professional Installation: Improper installation can exacerbate intake problems. Consider professional help if needed.
• Tuning: Tuning is highly recommended with most aftermarket intakes for optimal performance and safety.