Fits all 2016 - 2021 Honda Civic Non-Si 1.5T
Fits Honda Sensing packages
Fits all variant models including CVT, RHD, and international models
Canadian models require USDM Windshield Washer Reservoir Conversion (provided by Teknotik)
Installation:
PDF - 2016-2021 Honda Civic 1.5T Cobra Cold Air Intake System Installation Instructions (Standard Bore)
PDF - 2016-2021 Honda Civic 1.5T Cobra Cold Air Intake System Installation Instructions (Big Bore)
Important Notes:
- No ECU calibration required for Standard Bore MAF housing
- Big Bore MAF housing requires a Big Bore MAF-specific ECU calibration
- Big Bore MAF base map calibrations available for both HONDATA and KTUNER
- Compatible with PHEARABLE calibrations when selecting the Two Step Performance "TSP" & "RACE MAF" options
- Not compatible with factory CVT coolers (Spain, Turkey, etc.)
Technical Notes:
There is a reason why our Cobra Cold Air Intake System is constantly discussed and highly acclaimed. Our CNC-machined billet aluminum MAF housing is designed to provide factory-spec fuel trims (within -4% of factory STFT and LTFT) for optimal drivability and performance. The Cobra CAI utilizes a 4-inch volume from the air filter to the MAF housing, and you can choose between two different MAF housings: Standard Bore and Big Bore. Both housings utilize the factory MAF sensor but feature two different diameters. As mentioned, the Standard Bore housing is designed to provide fuel trims to factory specifications without any tuning, while the Big Bore housing allows for 50% more airflow compared to the Standard Bore housing. This is why tuning is required. This massive airflow reduces pumping losses and creates an unrestricted air path to supply ambient temperature air to the MAF housing.
Customers can use the MAF Housing Conversion Kit
Customers can use the Short Ram Intake Conversion Kit
Performance Improvements:
- 15 horsepower and 12 ft/lb torque increase compared to stock with Standard Bore MAF housing without tuning - see more details here!
- 20 horsepower and 15 ft/lb torque increase compared to stock with Big Bore MAF housing with Big Bore MAF base map calibration on Hondata and/or KTuner - see more details here!
- Even greater gains seen at higher power levels with custom tuning
Third-Party Testing:
Kit Contents:
- Billet aluminum MAF housing (anodized black)
- PRL Motorsports high-flow oiled cone air filter
- (1) 4-ply upper silicone intake hose (Standard or Big Bore)
- (1) 6-ply lower silicone intake hose
- HDPE rotomolded lower intake tube
- (4) 304 stainless steel worm clamps
- Stainless steel mounting bracket
- Stainless steel hardware
Silicone is only available in black – the upper hose differs from our "Stage 1" silicone
Above is a graph of Long Term Fuel Trim with a stock intake including the airbox and factory ECU mapping, i.e., a bone-stock car.

The graph of Long Term Fuel Trim again with the Cold Air Intake (Standard Bore MAF housing) and factory ECU mapping.

This is another Long Term Fuel Trim graph, but using the Cold Air Intake (Standard Bore MAF housing) and +6psi Hondata off-the-shelf map.
Notice how consistent and similar all the graphs are. Each graph is within -4 LTFT.

Above is a graph of Short Term Fuel Trim using a stock intake (stock car) with airbox and factory ECU mapping.

Here is a Short Term Fuel Trim graph using our Cold Air Intake (Standard Bore MAF housing) and factory ECU mapping.

This is another graph of Short Term Fuel Trim using the Cold Air Intake (Standard Bore MAF housing) and +6psi Hondata off-the-shelf map. All STFT graphs show identical curves and consistency.
Before Ordering
〇 Regarding Import Consumption Tax
At the Shaftoya shopping site, we cover the import consumption tax incurred at the time of import on your behalf, so there will be no additional charges beyond the total amount you pay at checkout.
〇Confirmation of Compatibility
All product databases are based on North American vehicles (USDM). Please confirm whether or not installation is possible on Japanese vehicles (JDM) before ordering. (If you are unsure if a listed product is compatible with your vehicle, please feel free to contact us. Our support team will investigate for you.)
If you order without confirming compatibility, we cannot accept returns due to incompatibility.
Please note that even if products are sorted by selecting the year, manufacturer, and vehicle model in the tabs on our top page, this does not necessarily mean they will fit Japanese model vehicles without modification.
All products have been translated into Japanese using translation software. There may be confusing expressions, so please contact us before ordering if you have any questions.
○ Regarding Shipping
Shipping costs are paid at the time of settlement. Shipping estimates are calculated automatically when you enter your shipping address on the checkout page. For large items such as body parts, there may occasionally be a significant discrepancy between the automatically calculated shipping cost and the actual shipping cost. In such cases, we will contact you individually via email.
All products are generally shipped internationally from our US warehouse. Unlike domestic shipping in Japan, international shipping takes about 7 to 14 days, so please order with plenty of time. If you are in a hurry, please contact us in advance to confirm the delivery date. All products are transported by air; none are shipped by sea.
○ Regarding Japanese Vehicle Inspection (Shaken) Compatibility
Basically, all products we handle are designed and manufactured outside of Japan. Please note that they do not conform to "Japanese vehicle inspection standards," and we cannot provide strength calculation documents for Japanese vehicle inspections. Therefore, all parts are sold for the purpose of "use on circuits, private property, or off-road," and installation and use are at your own risk.
○ Regarding Warranty
Please check the contents immediately upon arrival. Since all products are shipped internationally from outside Japan, there may be delivery damage to the packaging box or the product. We will only handle returns, refunds, or exchanges for defective products or items different from what was ordered if you contact us within 7 days of receipt. Please understand that for products sold through us, warranty-related support will be handled "exclusively through us." We do not provide support through other companies or distributors located within Japan.
