PRL 1.5T Cobra Cold Air Intake System - Standard Bore 2016-2020 Honda Civic Si

 Part Number:  PRL-HC10-INT-CAI-B   Ships in 1-5 business days if in stock. Vehicle Applications: 2017-2020 Civic Si   Fits all 2017-2021 Honda Civic Si 1.5TFits Honda Sensing Package   Important Notes: NO CALIBRATION REQUIRED FOR SANDARD BORE MAF HOUSING TWO STEP PERFORMANCE "TSP" & PHEARABLE CALIBRATIONS COMPATIBLE BY SELECTING "RACE MAF" OPTION NOT COMPATIBLE WITH FACTORY CVT COOLER (SPAIN, TURKEY, ETC)   Technical Notes: There’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 & 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 menti