PRL Motorsports Short Ram Intake Honda Civic Si 2017-2021

Fitment Notes:

• FITS 2017+ HONDA CIVIC SI

Please Read Before Ordering:

• 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

Technical Notes:

If we could recommend an intake system for the 1.5L Turbo Civic Platform it would our Cobra Cold Air Intake System. However, for customers that do not wish to run a CAI, our Short Ram Intake System is also an option. 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. This SRI utilizes a 4" air filter 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. 

Performance Gains:

• 15 horsepower and 12 ft/lb torque gains in comparison to stock with Street MAF housing WITHOUT TUNE
• 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
• Larger gains to be seen at higher power levels with custom tuning

Please note that short ram intakes are extremely sensitive to heat-soak with this chassis (which is why we recommend our CAI). Performance gains will lessen as the engine and intake begins to heat-soak.