If you're looking to give your 2006-2011 Honda Civic Si a serious boost, the HPS Red cold air intake kit is a solid choice. This kit moves the HPS Performance Air Filter outside the engine bay, which means you're getting cooler air straight into the engine. Cooler air? More oxygen. More oxygen? You guessed it—better combustion. We're talking about a dyno-proven gain of +8.9 Whp and +7.1 Ft/lbs of torque. Plus, your throttle response is going to feel snappier, which is always a welcome upgrade.

Installation is pretty straightforward. The manual that comes with it has clear pictures and step-by-step instructions, so you won't be scratching your head wondering what to do next. You won’t need to tune your engine after install, but just a heads up: you will have to remove the front bumper to get everything in place. It sounds a bit daunting, but trust me, it makes the process smoother.

The kit features a lightweight, mandrel-bent aluminum tube that replaces the stock air box, optimizing airflow like you wouldn't believe. Plus, it comes with those beefy HPS signature reinforced silicone hoses and industrial-grade stainless steel T-bolt clamps. They’re built to last, even when you're pushing your ride to the limits. And don’t worry about the check engine light—there's an air straightener included to keep things in check.

Another cool perk is the HPS silicone coolant re-route hose, which prevents the intake pipe from rubbing against your stock coolant hose. It’s those little details that make a big difference. And let’s not forget the all-new HPS Performance Air Filter. It's washable and reusable, so you won't be constantly buying new filters. It’s designed to trap dirt down to 5 microns while still allowing for superior airflow.

Here’s a quick rundown of the specs:

• Dyno-proven gains: +8.9 Whp and +7.1 Ft/lbs torque
• 2.75" mandrel-bent aluminum piping
• Includes an air straightener to minimize check engine light chances
• Washable and reusable HPS Performance Air Filter (Part Number: HPS-4275)
• Easy-to-follow installation manual included
• Color: Red
• Not CARB compliant

This cold air intake system is designed specifically for the 2006-2011 Honda Civic Si 2.0L. If you’re ready to take your driving experience up a notch, this is definitely worth considering.