AEM cold air intake number 21-400P was the first Honda Civic Air Intake offered by AEM intakes and set the standard for which cold air intakes are judged today
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The Honda Civic Si is the optional sport compact trim level introduced in 1984 for the Japanese Domestic Market (JDM) third generation Honda Civic. The U.S. Domestic Market (USDM) was rewarded with the Civic CRX Si in 1985. The Honda Civic Si trim level, short for Sport Injected, is typically outfitted with a performance suspension package, slightly different aesthetics including Si badging, a manual transmission, and a high output engine when compared to the other Honda Civic trim levels.
The Fourth Generation EF Honda Civic CRX Si was powered by the D16A6 but was commonly swapped for a JDM Civic Type-R or Acura Integra GS-R B-Series engine
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Advanced Engine Management, more commonly referred to as AEM, was embedded in the import tuner market from the very beginning. AEM’s presence in the tuner movement and its proximity to Nissan, TRD and Honda allowed AEM a unique opportunity. By living side by side with racers and working with OES engineers, AEM was able to understand both the practical and theoretical side of engine performance. This combination of street experience and technical savvy resulted in the birth of packaged Cold Air Induction Kits. AEM cold air intake kit 21-400P was offered for sale in 1994 as a Do-It-Yourself upgrade for the Honda CRX and proved to be the beginning of a whole new tradition.
A Honda Civic Short Ram Air Intake System from AEM intakes, like number 22-401R, is available in three color choices for 1992-1995 EG Honda Civic Si models
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1988 to 1991 Fourth Generation EF Honda Civic Air Intake options for Civic Si and CRX Si:
AEM Cold Air Intakes have their roots in the 1988, 1989, 1990, and 1991 fourth gen EF Honda Civic Si and CRX Si. The first AEM CAI developed was number 21-400P for the D16A6 powered Civic Si. This AEM cold air intake is available with three color options for the air intake tubes. Number 21-400P features a polished finish, 21-400C is powder-coated in a charcoal gray, and 21-400R is protected with candy red color powder-coating.
The 1992, 1993, 1994, and 1995 EG Honda Civic Si was only available in the USDM as a Civic Hatch back model and came with a D16Z6 SOHC VTEC inline four-cylinder engine
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The 1999 and 2000 EK Honda Civic Si coupe can be equipped with AEM Honda Civic Air Intake options including a cold air intake, short ram intake, or dual chamber intake
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The JDM EF Honda Civic Si was powered by a more powerful B-series engine than the USDM Civic Si and CRX Si. This created a trend in swapping out USDM D-series engines with a JDM B-series power plant. To accommodate these engine swaps AEM created a direct-fit Honda Civic Air Intake for Honda and Acura models. 1988, 1989, 1990, and 1991 fourth gen EF Honda Civic owners who have swapped a B18C5 (Type R) & B16A engine should choose CAI part number 21-5001C. 1988-1991 EF Civic owners can install 21-5002C if the stock D16 has been swapped for a B18C1(GS-R /SiR-G) B-series engine. These intake systems will bolt up to a stock B-series engine with common tools and also work well with high-output B-series engines.
1992 to 1995 Fifth Generation EG Honda Civic Air Intake options for Civic Si:
Dual Chamber Honda Civic Air Intake is available for 2002-2005 EP3 Honda Civic Si models and is designed to help charge the cylinders with more air for more power
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The fifth gen EG Honda Civic Si saw the introduction of the famous Honda VTEC technology and was powered by the D16Z6 SOHC VTEC engine. Building off of the reputation gained in tuning 1988-1991 Honda Civic Si models, AEM released similar AEM Honda Civic air intake options for the 1992, 1993, 1994, and 1995 Honda Civic. AEM cold air intakes, numbers 21-401B, 21-401C, 21-401P, and 21-401R are once again available with multiple color options. An AEM short ram intake is available as numbers 22-401B, 22-401P, and 22-401R. Different for the EG though, is the option for an AEM dual chamber Honda Civic air intake system. The dual chamber EG Honda Civic Air Intake, number 24-6004C, takes advantage of a patented design which utilizes two different diameters and lengths of piping to create multiple frequency sounds waves. The theory behind the dual chamber design is that multiple frequency sound waves help charge the cylinders with more air helping to make more power. These Honda Civic Air Intake systems will also fit applicable Honda Del Sol S, Del Sol Si and Del Sol VTEC models.
A 1999 and 2000 EK Honda Civic Si coupe was available in Electron Blue Pearl, Milano Red, or Flamenco Black Pearl and a color coordinated AEM Honda Civic Air Intake can be installed
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2002-2005 EP3 Honda Civic Si owners can choose an AEM Intakes Honda Civic Air Intake cold air intake system, short ram intake system, or dual chamber air intake
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1999 to 2000 Sixth Generation EK Honda Civic Air Intake options for Civic Si:
The EK Honda Civic Si actually took a brief hiatus, enjoying a short production life between 1998 and 2000. Introduced to the USDM for the 1999 model year, the EK Honda Civic Si was powered by the B16A2 DOHC VTEC engine. 1999 and 2000 model year Honda Civic Si coupe owners can choose from an AEM cold air intake in blue (21-417B), charcoal gray (21-417C), polished (21-417P) or red (21-417R). Also available for the 1999-2000 EK Honda Civic Si is a short ram intake option in blue (22-417B), charcoal gray (22-417C), polished (22-417P) or red (22-417R). Returning again for the sixth gen Si Honda Civic air intake is a dual chamber air intake powder-coated in charcoal gray.
Similar to the 2002-2005 Ep3 Si, the 2006-2011 FA was powered by the K-series engine, this time with 197 horsepower being produced by the K20Z3 i-VTEC DOHC I4
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The Honda Civic Air Intake cold air intake system for 2006-2011 FA Honda Civic Si models relocates the AEM dryflow filter outside the engine compartment for cool air
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2002 to 2005 Seventh Generation EP3 Honda Civic Air Intake options for Civic Si:
The 2002, 2003, 2004, and 2005 EP3 Honda Civic Si, did not share the body style or interior with the USDM Civic. Instead, the EP3 Honda Civic Si shared its platform and power train with the base model Acura RSX. The seventh generation Civic Si discontinued the use of the popular B-series engine and adopted the K-series K20A3 engine. AEM offers Honda Civic Air Intake CAI and short ram intake options for 2002-2005 EP3 Civic Si models. The EP3 Si Honda civic cold air intake is only offered in gray (21-508C) or red (21-508R), however the EP3 Si Honda civic short ram intake has more color options. 22-508B is finished in candy blue, 22-508P uses mirror-like air intake tubes, and 22-508R comes powder-coated in candy red. Dual Chamber Air Intake technology is available for the 2002, 2003, 2004, and 2005 EP3 Honda Civic Si with charcoal gray AEM air intake number 24-6108C.
2006 to 2014 Eighth and Ninth Generation FA and FB Honda Civic Air Intake options for Civic Si:
The FB Honda Civic Si was introduced for 2012 and is equipped with a larger 2.4-liter K24Z7 i-VTEC DOHC I4 making more horsepower and torque than FA models
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The eighth generation FA Honda Civic Si was produced from 2006 to 2011 and continued to use the K-series engine first adopted into the EP3 Si. The 2006, 2007, 2008, 2009, 2010, and 2011 FA Honda Civic Si was powered by a 2.0-liter K20Z3 i-VTEC DOHC I4 engine rated at 197 horsepower. 2012 and later ninth generation FB Honda Civic Si models received a larger 2.4-liter K24Z7 i-VTEC DOHC I4 which makes slightly more horsepower but makes considerably more torque than the K20Z3 engine.
K24Z7 powered 2012, 2013, and 2014 FB Honda Civic Si models benefit from the installation of an AEM CAI Honda Civc Air Intake with an estimated 8 more horsepower
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2006-2011 FA Honda Civic Si owners can install the 21-685C or 21-685P AEM cold air intake system for an estimated 6.27 more horsepower over stock. An AEM short ram intake is offered for 2006 and 2007 FA Honda Civic Si models. Available in blue (22-516B), polished (22-516P), or red (22-516R) the 2006-2007 Honda Civic Si short ram intake will provide an estimated 6.6 more horsepower on an otherwise stock Honda Civic Si.
2012, 2013, 2014, and 2015 FB Honda Civic Si models with the K24Z7 engine can benefit from the installation of a CAI Honda Civic Air Intake in gray (21-716C) or polished (21-716P). The Honda Civic air intake system for 2012-2014 FB Civic Si models produced an estimated 8 more horsepower without the need for further modifications.
AEM’s first glimpse of mainstream notoriety came when cars tuned by their shop won in various classes at one of the early “Battle of the Imports” races. This highly contested shoot-out and others that followed landed AEM on the cover of Turbo Magazine and Sport Compact Magazine. AEM has been a leader in the development and sale of precision tuned induction systems ever since that fateful day at the Battle of the Imports. Today, the Company’s induction systems number in the hundreds and AEM is still the one to beat. To find a Honda Civic Air Intake for your car use the search by car or truck tool on AEMIntakes.com.
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