"Very fast shipping the sound and performance it gives my 2019 honda civic si is amazing thank you."
Fits all 2017-2021 Honda Civic Si 1.5T
Fits most variant models including 6MT, CVT, RHD, International Models, Etc.
INSTALLATION:
PDF - 2016-2021 Honda Civic 1.5T Short Ram Intake System Install Instructions (Standard Bore)
PDF - 2016-2021 Honda Civic 1.5T Short Ram Intake System Install Instructions (Big Bore)
Important Notes:
- NO CALIBRATION REQUIRED FOR STANDARD BORE MAF HOUSING
- BIG BORE MAF-SPECIFIC CALIBRATION IS REQUIRED FOR BIG BORE MAF HOUSING
- BIG BORE MAF BASEMAP CALIBRATIONS AVAILABLE IN BOTH HONDATA & KTUNER
- TWO STEP PERFORMANCE "TSP" & PHEARABLE CALIBRATIONS 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 Standard Bore housing and a Big Bore housing. Both housings utilizes the factory MAF sensor, but feature two different diameters and profiles. As mentioned above, the Standard Bore housing is designed to provide factory-spec fuel trims WITHOUT any tuning whatsoever. The Big Bore housing allows a 50% larger volume of air in comparison to the Standard Bore 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.
Customers can switch between MAF housings without having to buy another intake system by purchasing our MAF Housing Conversion Kit
Customers can convert to a Cold Air Intake with our Cold Air Intake Conversion Kit
Performance Gains:
- 15 horsepower and 12 ft/lb torque gains in comparison to stock with Standard Bore MAF housing WITHOUT TUNE
- 20 horsepower and 15 ft/lb torque gains in comparison to stock with Big Bore MAF housing WITH Big Bore MAF basemap calibration on Hondata and/or KTuner
- Larger gains to be seen at higher power levels with custom tuning

Above is a graph of the long term fuel trims with the stock intake w/ air box and factory ECU mapping, or in other words a bone-stock car.
Here is a graph of the long term fuel trims again with, but with our cold air intake (Standard Bore MAF) and factory ECU mapping.
This is another long term fuel trim graph, but with our cold air intake (Standard Bore MAF) and +6psi Hondata off-the-shelf map.
Notice how consistent and similar all of the LTFT graphs are. Each graph is within -4 LTFT.
Above is a graph of the short term fuel trims with stock intake w/ air box and factory ECU mapping (stock car).

Here is a short term fuel trim graph with our cold air intake (Standard Bore MAF) and factory ECU mapping.
This is another graph of the short term fuel trims with our cold air intake (Standard Bore MAF) and +6psi Hondata off-the-shelf map.
All of the STFT graphs display identical curves and consistency.
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Overall rating: 4.894737 / 5 from 38 reviews.
AI Generated Review Summary
The 2017-2021 Honda Civic Si 1.5T Short Ram Air Intake System offers a significant performance boost and is easy to install. Customers have praised its impressive sound and ease of installation.
Summary topics
- Sound Quality: 40%
- Installation Ease: 20%
Review topics: ["difference","install","issues","shipping","sounds","turbo"].
Review highlights
- "Amazing sounds and easy install" —
- "easy install and great outcome on sound and slight power difference." —
- "If your looking for a simple install with the perfect swoosh sound this is it!" —
Reviews
"Fast shipping"
"love the sound"
"Exactly what I was looking for!"
"Loved it"
Perfect fit good product!
"Just a little expensive for just a short ram intake :/"
"A bit pricey but very worth it sounds amazing"
Intake
"I absolutely love my PRL short ram air intake. Easy to install and sounds amazing! Thank you"
Great product
"Great product worth the money and sound amazing car would recommend it"
Short Ram intake
"It's great I love it how sound"
Q&A
- will this work out in my 2022 hatchback civic touring? what would i need to do? or would it be a simple set up
- Greetings. No, the 10th Gen products will not fit on your 2022+. But these will: https://prlmotorsports.com/collections/all-products?filter.p.m.mmge.model=Civic&filter.p.m.mmge.year=2022&filter.p.vendor=PRL+Motorsports
- If I get a short ram intake for my 2019 Honda Civic si with the street map do I need a tune ?
- Greetings. No tune needed with the Street version.
- Will this intake fit my 2018 honda civic si sedan. Do I have to modify anything??
- Greetings. Yes, this will fit your 2018 Si , and No, you will not need to modify anything.
- También funciona con el civic sport Hatchback?
- Se adapta a todos los Civic 2016-2021 Non-Si 1.5T
- is the 2017-2021 Honda Civic Si 1.5T Short Ram Air Intake System CARB compliant?
- Hi John, Currently our 10th Gen SRI and Cobra CAI are in the process of CARB testing/approval. We will be sure to update our product listings if/once approved.