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The Honda Civic Si is a favorite among car enthusiasts for its performance and tunability. One of the most effective ways to increase horsepower is by upgrading the intake manifold. Below, we explore the top five intake manifold upgrades that can boost your Civic Si’s power by 15-20 horsepower, all for under $500.
1. Skunk2 Pro Series Intake Manifold
The Skunk2 Pro Series Intake Manifold is a popular choice for Honda enthusiasts. Designed for high-performance applications, it offers improved airflow and increased power output.
- Power Gain: Up to 20 HP
- Material: Lightweight aluminum
- Compatibility: Fits various Honda Civic Si models
2. K-Tuned Intake Manifold
The K-Tuned Intake Manifold is engineered for maximum performance. It features a larger plenum and improved runner design, which enhances throttle response and overall engine efficiency.
- Power Gain: 15-18 HP
- Material: High-quality aluminum
- Compatibility: Honda Civic Si 2006-2011
3. AEM Cold Air Intake System
The AEM Cold Air Intake System is not just an intake manifold but a complete system that improves airflow to the engine. It includes a high-flow air filter and a heat shield, ensuring cooler air intake.
- Power Gain: 15 HP
- Material: Aluminum piping
- Compatibility: Honda Civic Si 2006-2011
4. Injen SP Series Cold Air Intake
The Injen SP Series Cold Air Intake offers a great balance of performance and price. It features a mandrel-bent aluminum tubing that optimizes airflow and enhances engine sound.
- Power Gain: 16-20 HP
- Material: Durable aluminum
- Compatibility: Honda Civic Si 2006-2011
5. Hondata FlashPro for Intake Manifold Upgrades
While not a physical intake manifold, the Hondata FlashPro is an essential tool for maximizing the potential of your intake upgrades. It allows for custom tuning, ensuring your engine runs efficiently with the new intake manifold.
- Power Gain: Varies based on tuning
- Features: Real-time data logging and tuning
- Compatibility: Honda Civic Si 2006-2011
Upgrading your Honda Civic Si’s intake manifold can significantly enhance its performance. Each of these options provides excellent value and power gains, making them ideal choices for enthusiasts looking to boost their vehicle’s horsepower without breaking the bank.