PRL Motorsports "Cobra" Cold Air Intake | 2017-2021 Honda Civic Si (PRL-HC10-INT-CAI-B/D)

2017-2021 Honda Civic Si "Cobra" Cold Air Intake System by PRL Motorsports

There's a reason our Cobra Cold Air Intake Systems is a constant topic of discussion and so highly regarded. Our CNC machined billet aluminum MAF Housing was designed to provide *factory-spec fuel trims (-4% of factory STFT & LTFT) for optimal drivability and performance. The Cobra CAI utilizes a 4" volume from the air filter into the MAF Housing and is available with two different MAF housing choices; a Street housing and a Race housing. Both housings utilizes the factory MAF sensor, but feature two different diameters and profiles. As mentioned above, the Street housing is designed to provide factory-spec fuel trims WITHOUT any tuning whatsoever. The Race housing allows a 50% larger volume of air in comparison to the Street housing, which is why a tune IS required. This larger volume of airflow reduces pumping loss and creates an unrestricted air path to feed the MAF housing with ambient temperature air.

Features

• 15 horsepower and 12 ft/lb torque gains in comparison to stock with Street MAF housing WITHOUT TUNE - Read More Here!
• 20 horsepower and 15 ft/lb torque gains in comparison to stock with Race MAF housing WITH Race MAF basemap calibration on Hondata and/or KTuner – Read More Here!
• Larger gains to be seen at higher power levels with custom tuning

Please Note

• The PRL USDM Windshield Washer Reservoir Conversion Kit (PRL-INT-10G-CAN) is required for CDM vehicles.
• No Tune Required For Street MAF Housing
• Race MAF-Specific Tune Required For Race MAF Housing
• Hondata & KTuner Both Offer Race MAF Basemap Calibrations
• Two Step Performance "TSP" Tune Also Compatible By Selecting "Race MAF" Option

Applications

• 2017-2021 Honda Civic Si
• *DOES NOT FIT OTHER 1.5T MODELS*

What's In The Box?

• Billet Aluminum MAF Housing (Anodized Black)
• PRL Motorsports High Flow Oiled Cone Air Filter
• (1) 4-Ply Upper Silicone Intake Hose (Race or Street)
• (1) 6-Ply Lower Silicone Intake Hose
• HDPE Rotomolded Lower Intake Tube
• (4) 304 Stainless Steel Worm Clamps
• Stainless Steel Mounting Brackets
• Stainless Steel Hardware

References

• Street Installation Instructions
• Race Installation Instructions

Warranty

• PRL Manufacturer's Warranty