Installation Guide for PRL Motorsports Honda Civic 1.5T High Volume Intake

Quick guide from the manual

This guide provides instructions for installing the PRL Motorsports High Volume Intake on 2022+ Honda Civic 1.5L Turbo models. The installation takes approximately 30-45 minutes. Note: This intake is designed to be 100% compatible with the factory ECU calibration; no tuning is required.

Required tools

• Ratchet
• 3" and 12" extensions
• 10mm socket
• Phillips head screwdriver
• Flathead screwdriver
• Magnetic pickup tool (recommended)
• Clip removal tool (optional)
• Pliers (optional)

Component list

Before beginning, verify all parts are present:

• 2022+ Civic 1.5T High Volume Airbox
• Inlet Duct
• High Volume MAF Housing
• Silicone Intake Hose
• 4" Inlet Air Filter Assembly
• Bracket A Assembly
• Airbox Mounting Post
• M6x30mm Socket Head Cap Screw
• Bracket B
• M5 x 10mm Flanged Button Head Cap Screws (5)
• Rubber Grommet
• Hose Clamps (2)
• 7mm Plastic Push-Through Rivet Clips (3)
• M4x10mm Socket Head Cap Screws (2)

Installation steps

1. Turn off the ignition and disconnect the negative battery terminal. Allow the vehicle to sit for at least 5 minutes to drain residual charge.
2. Remove the factory air duct from the top of the engine bay by removing the two 10mm bolts and the plastic tab.
3. Remove the two 10mm bolts from the bracket on the front of the airbox and the two 10mm bolts holding the factory duct to the core support.
4. Disconnect the MAF sensor harness.
5. Use a 12" extension to remove the 10mm bolt on the right side of the airbox.
6. Gently wiggle the factory airbox to remove it from the factory post mount.
7. Install the new Airbox Mounting post with the M6x25mm bolt. Install Mounting Bracket A to the core support using factory 10mm bolts.
8. Install Mounting Bracket B to the side of the airbox with the provided 10mm screws and seat the factory rubber grommet.
9. Seat the PRL rubber grommet into the underside of the new airbox.
10. Place the new airbox into the engine bay, seating it on the mounting posts, and tighten the 10mm bolt on the right side.
11. Affix the new inlet duct to the airbox using the 3 plastic push rivets and attach it to the core support with factory 10mm bolts.
12. Attach the 4" air filter to the MAF housing using the worm gear clamp.
13. Attach the MAF housing to the airbox using the 3 provided 10mm screws. Do not over-tighten.
14. Install the silicone intake hose and worm gear clamps onto the MAF housing and factory inlet. Adjust so the PRL logo faces upward and tighten clamps.
15. Remove the factory MAF sensor from the old airbox and install it into the new MAF housing using the provided button cap screws. Re-attach the MAF harness.

Road testing

Start the vehicle with the transmission in neutral and the emergency brake engaged. Check for any issues, then perform a test drive to ensure everything is in working order.

Required maintenance

Visually inspect the air filter screen at every oil change. Clean the filter element when the screen is no longer visible or at a 30,000-mile interval. Use the #2801 Filter Cleaning & Recharge kit for maintenance. When cleaning, tap off excess debris, spray with cleaning solution, soak for 15 minutes, rinse from clean side to dirty side, allow to dry naturally, and re-oil using the supplied filter oil.