{"product_id":"2017-2021-honda-civic-si-1-5t-cobra-cold-air-intake-system-standard-bore","title":"2017-2021 Honda Civic Si 1.5T Cobra Cold Air Intake System - Standard Bore","description":"\u003cp\u003e\u003cstrong\u003eFITS\u003c\/strong\u003e: 10th Gen Honda Civic Si 1.5T\u003c\/p\u003e\n\u003ch3\u003eImportant Notes:\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNO CALIBRATION REQUIRED FOR SANDARD BORE MAF HOUSING\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eTWO STEP PERFORMANCE \"TSP\" \u0026amp; PHEARABLE CALIBRATIONS COMPATIBLE BY SELECTING \"RACE MAF\" OPTION\u003c\/li\u003e\n\u003cli\u003eNOT COMPATIBLE WITH FACTORY CVT COOLER (SPAIN, TURKEY, ETC)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Notes:\u003c\/h3\u003e\n\u003cp\u003eThere’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 \u0026amp; 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 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.\u003c\/p\u003e\n\u003cp\u003eCustomers can switch between MAF housings without having to buy another intake system by purchasing our MAF Housing Conversion Kit.\u003c\/p\u003e\n\u003cp\u003eCustomers can convert to a Short Ram Intake with our Short Ram Intake Conversion Kit.\u003c\/p\u003e\n\u003ch3\u003ePerformance Gains:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e15 horsepower and 12 ft\/lb torque gains in comparison to stock with Standard Bore MAF housing WITHOUT TUNE.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLarger gains to be seen at higher power levels with custom tuning\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"youtube-container no-container\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/9jvDEnRSI84\" height=\"315\" width=\"560\" class=\"no-container\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eThird Party Testing:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHondata\u003c\/li\u003e\n\u003cli\u003eInnovative MotorWorks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKit Includes:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eStandard Bore Cobra MAF Housing (Si)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003ePRL Motorsports High Flow Oiled Cone Air Filter\u003c\/li\u003e\n\u003cli\u003e(1) 4-Ply Upper Silicone Intake Hose (Big Bore or Standard Bore)\u003c\/li\u003e\n\u003cli\u003e(1) 6-Ply Lower Silicone Intake Hose\u003c\/li\u003e\n\u003cli\u003eHDPE Rotomolded Lower Intake Tube\u003c\/li\u003e\n\u003cli\u003e(4) 304 Stainless Steel Worm Clamps\u003c\/li\u003e\n\u003cli\u003eStainless Steel Mounting Brackets\u003c\/li\u003e\n\u003cli\u003eStainless Steel Hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eSILICONE IS ONLY AVAILABLE IN BLACK – UPPER HOSE IS DIFFERENT THAN OUR “STAGE 1” SILICONE\u003c\/em\u003e\u003c\/p\u003e","brand":"PRL motorsports","offers":[{"title":"Default Title","offer_id":67797567963424,"sku":"PRL-HC10-INT-CAI-B","price":430.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0795\/6883\/0752\/files\/Screenshot2026-10-15at1.17.17PM.png?v=1792095442","url":"https:\/\/axionperformanceparts.com\/products\/2017-2021-honda-civic-si-1-5t-cobra-cold-air-intake-system-standard-bore","provider":"Axion Performance Parts","version":"1.0","type":"link"}