{"product_id":"prl-motorsports®-16-21-honda-civic-si-cold-air-intake-system-with-oiled-filter","title":"PRL Motorsports® (16-21) Honda Civic Si Cold Air Intake System with Oiled Filter","description":"\u003ch1\u003eCOMPATIBLE: (1.5L)\u003c\/h1\u003e\n\u003ch1\u003e2016 - 2021 HONDA CIVIC SI \u003c\/h1\u003e\n\u003cdiv\u003e\n\u003ch2\u003e\u003cspan face=\"Tahoma\"\u003e\u003cspan\u003eFits all 2017-2021 Honda Civic Si 1.5T\u003cbr\u003eFits most variant models including 6MT, CVT, RHD, International Models, Etc.\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch2\u003e\u003cbr\u003e\u003c\/h2\u003e\n\u003ch2\u003eINSTALLATION:\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003e\n\u003ca title=\"PDF - 2016-2021 Honda Civic 1.5T Short Ram Intake System Install Instructions (Standard Bore)\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0568\/5703\/4945\/files\/PRL_ShortRam-Street_InstallGuide_Web.pdf?v=1679588740\"\u003e\u003cspan\u003e\u003cstrong\u003ePDF - 2016-2021 Honda Civic 1.5T Short Ram Intake System Install Instructions (Standard Bore)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003e\n\u003ca title=\"PDF - 2022+ Honda Civic 2.0L Stage 1 Intake System Install Instructions\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0568\/5703\/4945\/files\/PRL_Civic-2016-NA_HVI-InstallGuide_8.5x5.5_CARB.pdf?v=1680632850\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0568\/5703\/4945\/files\/PRL_ShortRam-Race_InstallGuide_Web.pdf?v=1679588740\" title=\"PDF - 2016-2021 Honda Civic 1.5T Short Ram Intake System Install Instructions (Big Bore)\"\u003e\u003cspan\u003e\u003cstrong\u003ePDF - 2016-2021 Honda Civic 1.5T Short Ram Intake System Install Instructions (Big Bore)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/h2\u003e\n\u003ch2\u003e\u003cbr\u003e\u003c\/h2\u003e\n\u003ch2\u003e\u003cbr\u003e\u003c\/h2\u003e\n\u003ch2\u003eImportant Notes:\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ch2\u003eNO CALIBRATION REQUIRED FOR STANDARD BORE MAF HOUSING\u003c\/h2\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eBIG BORE MAF-SPECIFIC CALIBRATION IS REQUIRED FOR BIG BORE MAF HOUSING\u003c\/h2\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eBIG BORE MAF BASEMAP CALIBRATIONS AVAILABLE IN BOTH HONDATA \u0026amp; KTUNER\u003c\/h2\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eTWO STEP PERFORMANCE \"TSP\" \u0026amp; PHEARABLE CALIBRATIONS COMPATIBLE BY SELECTING \"RACE MAF\" OPTION\u003c\/h2\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cbr\u003e\u003c\/h2\u003e\n\u003ch2\u003eTechnical Notes:\u003c\/h2\u003e\n\u003ch2\u003eIf we could recommend an intake system for the 1.5L Turbo Civic Platform it would our\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/prlmotorsports.myshopify.com\/collections\/2016-2021-honda-civic-1-5t\/products\/2017-honda-civic-si-1-5t-cobra-cold-air-intake-system\"\u003eCobra Cold Air Intake System\u003c\/a\u003e. 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 \u0026amp; 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.\u003c\/h2\u003e\n\u003ch2\u003eCustomers can switch between MAF housings without having to buy another intake system by purchasing our \u003ca href=\"https:\/\/prlmotorsports.myshopify.com\/collections\/intake\/products\/2016-honda-civic-1-5t-maf-housing-conversion-kit\"\u003eMAF Housing Conversion Kit\u003c\/a\u003e\n\u003c\/h2\u003e\n\u003ch2\u003eCustomers can convert to a Cold Air Intake with our\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/prlmotorsports.myshopify.com\/collections\/intake\/products\/2016-honda-civic-1-5t-short-ram-intake-to-cold-air-conversion-kit\"\u003eCold Air Intake Conversion Kit\u003c\/a\u003e\n\u003c\/h2\u003e\n\u003ch2\u003e\u003cbr\u003e\u003c\/h2\u003e\n\u003ch2\u003ePerformance Gains:\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ch2\u003e15 horsepower and 12 ft\/lb torque gains in comparison to stock with Standard Bore MAF housing WITHOUT TUNE\u003c\/h2\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003e20 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\u003c\/h2\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eLarger gains to be seen at higher power levels with custom tuning\u003c\/h2\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePlease 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.\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003ch2\u003e\u003cbr\u003e\u003c\/h2\u003e\n\u003ch2\u003e\n\u003ca href=\"https:\/\/app.photobucket.com\/u\/prlspencer\/p\/6a69dadd-e928-44d3-8e67-58b61f026483\" target=\"_blank\"\u003e\u003cimg src=\"https:\/\/hosting.photobucket.com\/images\/kk200\/prlspencer\/Civic_x_L.trim_stock_intake_and_stock_tune_zpskkzb36fg.jpg?width=1920\u0026amp;height=1080\u0026amp;fit=bounds\" border=\"0\" alt=\"Civic_x_L.trim_stock_intake_and_stock_tune_zpskkzb36fg\"\u003e\u003c\/a\u003e\u003cbr\u003eAbove 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.\u003cbr\u003e\u003cbr\u003e\u003cimg src=\"https:\/\/hosting.photobucket.com\/images\/kk200\/prlspencer\/Civic_x_L.trim_PRL_intake_and_stock_tune_zpsfqmhgzzt.JPG?width=1920\u0026amp;height=1080\u0026amp;fit=bounds\" border=\"0\" alt=\"Civic_x_L.trim_PRL_intake_and_stock_tune_zpsfqmhgzzt\"\u003e\u003cbr\u003eHere is a graph of the long term fuel trims again with, but with our cold air intake (Standard Bore MAF) and factory ECU mapping.\u003cbr\u003e\u003cbr\u003e\u003cimg src=\"https:\/\/hosting.photobucket.com\/images\/kk200\/prlspencer\/Civic_x_L.trim_PRL_intake_and_Hondata_6psi_tune_zpsvk4gipc4.JPG?width=1920\u0026amp;height=1080\u0026amp;fit=bounds\" border=\"0\" alt=\"Civic_x_L.trim_PRL_intake_and_Hondata_6psi_tune_zpsvk4gipc4\"\u003e\u003cbr\u003eThis is another long term fuel trim graph, but with our cold air intake (Standard Bore MAF) and +6psi Hondata off-the-shelf map.\u003cbr\u003e\u003cbr\u003eNotice how consistent and similar all of the LTFT graphs are. Each graph is within -4 LTFT.\u003cbr\u003e\u003cbr\u003e\u003cimg src=\"https:\/\/hosting.photobucket.com\/images\/kk200\/prlspencer\/Civic_x_S.trim_stock_intake_and_stock_tune_zpsswmv0ane.JPG?width=1920\u0026amp;height=1080\u0026amp;fit=bounds\" border=\"0\" alt=\"Civic_x_S.trim_stock_intake_and_stock_tune_zpsswmv0ane\"\u003e\u003cbr\u003eAbove is a graph of the short term fuel trims with stock intake w\/ air box and factory ECU mapping (stock car).\u003cbr\u003e\u003cbr\u003e\u003cimg src=\"https:\/\/hosting.photobucket.com\/images\/kk200\/prlspencer\/Civic_x_S.trim_PRL_intake_and_stock_tune_zps1mnt3fck.jpg?width=1920\u0026amp;height=1080\u0026amp;fit=bounds\" border=\"0\" alt=\"Civic_x_S.trim_PRL_intake_and_stock_tune_zps1mnt3fck\"\u003e\u003cbr\u003eHere is a short term fuel trim graph with our cold air intake (Standard Bore MAF) and factory ECU mapping.\u003cbr\u003e\u003cbr\u003e\u003ca href=\"https:\/\/app.photobucket.com\/u\/prlspencer\/p\/3baa5a07-8100-406a-b1ef-8f2152e74454\" target=\"_blank\"\u003e\u003cimg src=\"https:\/\/hosting.photobucket.com\/images\/kk200\/prlspencer\/Civic_x_S.trim_PRL_intake_and_Hondata_6psi_tune_zpscqlf4ni0.JPG?width=1920\u0026amp;height=1080\u0026amp;fit=bounds\" border=\"0\" alt=\"Civic_x_S.trim_PRL_intake_and_Hondata_6psi_tune_zpscqlf4ni0\"\u003e\u003cbr\u003e\u003c\/a\u003eThis is another graph of the short term fuel trims with our cold air intake (Standard Bore MAF) and +6psi Hondata off-the-shelf map.\u003cbr\u003e\u003cbr\u003eAll of the STFT graphs display identical curves and consistency.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch1\u003e\u003cstrong\u003eWARRANTY:\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/10secondracing.com\/pages\/prl-motorsports%C2%AE-product-warranty\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0030\/5315\/8515\/files\/PRL_LOGO.webp?v=1762919617\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"PRL Motorsports®","offers":[{"title":"Standard Bore","offer_id":42259526942814,"sku":"PRL-HC10-INT-SRI-B","price":314.99,"currency_code":"USD","in_stock":true},{"title":"Big Bore","offer_id":42259526975582,"sku":"PRL-HC10-INT-SRI-D","price":314.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0030\/5315\/8515\/files\/Screenshot2025-12-09at6.57.47PM.png?v=1765335496","url":"https:\/\/10secondracing.com\/products\/prl-motorsports%c2%ae-16-21-honda-civic-si-cold-air-intake-system-with-oiled-filter","provider":"10 Second Racing","version":"1.0","type":"link"}