PRL Short Ram Air Intake for 17-21 Honda Civic Si

For customers that do not wish to run a CAI, PRL's Short Ram Intake System is an option.

PRL's 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.

Features

• CNC machined billet aluminum MAF Housing
• Utilizes a 4" performance air filter
• Available with two MAF housing choices; a Street housing and a Race housing
• Street housing is designed to provide factory-spec fuel trims (-4% of factory STFT & LTFT) WITHOUT any tuning whatsoever
• Race housing allows a 50% larger volume of air in comparison to the Street housing and requires a tune. The increased airflow reduces pumping loss and creates an unrestricted air path to feed the MAF housing with ambient temperature air

PLEASE NOTE

• 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
• Short ram intakes are extremely sensitive to heat-soak with this chassis. Performance gains will lessen as the engine and intake begins to heat-soak.

Applications

• 2017 - 2021 Honda Civic Si

Performance Gains

• +15 horsepower and +12 ft/lb torque gains (Street MAF housing WITHOUT TUNE)
• +20 horsepower and +15 ft/lb torque gains (Race MAF housing WITH Tune)
• Larger gains to be seen at higher power levels with custom tuning