Injen® - SP Series Short Ram Air Intake System

54 reviews / Item # 360568
Injen® - SP Series Air Intake System
Injen® - SP Series Air Intake SystemInjen® - SP Series Air Intake SystemInjen® - Installation InstructionINJEN® - Sisters installing an Injen Air Intake 602x420Made In USAInjen Authorized Dealer
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2008 Honda Civic Si
Fits Following Model(s):
  • This part is CARB compliant.
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Product Details

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Injen Air Intake Systems

Honda Civic Si 2008, SP Series Short Ram Air Intake System by Injen®. Filter Color: Blue. System Type: Ram Air Intakes. HP Gain: up to 8.5 hp. TQ Gain: up to 7 lbs./ft. The Short Ram SP Series is a traditional, underhood air intake system that takes the place of your factory airbox and air filter, and the factory air intake tube. The EA Nanofiber air filter allows increased airflow and the aluminum alloy intake tube smoothes the airflow path into the engine. The increased airflow and velocity results in more power, increased acceleration and better fuel economy.

Fitment notes: This part is CARB compliant.

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  • Filter Color: Blue
  • System Type: Ram Air Intakes
  • HP Gain: up to 8.5 hp
  • TQ Gain: up to 7 lbs./ft.


  • Improves airflow into the engine
  • Uses the patented MR Technology tuning process to ensure the air/fuel ratio is within optimum limits
  • Increases horsepower
  • Improves acceleration and fuel economy
  • Easily installs under the hood
  • Every system includes the EA Nanofiber dry air filter
  • Air intake pipe constructed of mandrel-bent 6061 aluminum for smooth airflow
  • Comes complete with all necessary mounting hardware and comprehensive installation instructions
  • Backed by a Limited Lifetime Warranty
  • Proudly manufactured in the USA

Just because the Injen SP Series Short Ram is a traditional "underhood" system, don't think it's any less of a performance air intake system. The SP Series Short Ram is a product of the same rigorous development and testing as Injen's other air intake systems. It's made of the same quality materials and features the same high flow EA Nanofiber dry air filter. The air intake tube is made of 6061, T-6 aluminum alloy, for strength, light weight and smooth airflow. All connections are made with quality silicone connectors that provide flexibility, while maintaining strength and thermal stability. The stainless steel hose clamps provide a solid seal that won’t loosen or deteriorate. The end result is a quality system that will improve performance and look great under the hood.

MR technology

Where the SP Series Short Ram differs from conventional short ram systems is the inclusion of Injen's patented MR (Mega Ram) Technology. MR Technology allows this system to attain increased intake airflow and performance while maintaining a safe air/fuel ratio. Injen steps down the diameter of the intake tube where the Mass Air Flow (MAF) sensor mounts, enabling the sensor to detect airflow within established parameters. The engine control computer can then maintain the proper air/fuel ratio and optimize horsepower and torque. Simply put, MR Technology tunes the intake system to avoid the necessity of recalibrating the MAF sensor, and prevents your engine from running too lean or too rich. With MR Technology, Injen created "The World's First Tuned Intake System", delivering optimum performance with a factory safe air/fuel ratio.

The SP Short Ram system installs in place of your factory airbox and air intake tube. It's carefully engineered, with CNC machined brackets and adapters, to ensure an exact fit. Installation is fast and simple and can be completed under the hood. There's no need to get underneath the car or do any significant component relocating. Everything necessary for installation is supplied, including comprehensive instructions. The SP Series Short Ram Air Intake System is backed by a Limited Lifetime Warranty.

Injen Technology Company, Ltd., based in Pomona, California, was formed as a sister company to RD Metal Works in 1998, to utilize the experience and design capabilities that RD Metal Works had gained designing and manufacturing air intake kits for leading air filter and intake manufacturers. Since that time, the company has made it a point to stay at the forefront of performance technology, continually setting new standards for quality and improving their engineering and manufacturing capabilities. This enables Injen to regularly introduce new, cutting edge products to market and has required the company to continually expand to meet the demand for those products. Today, Injen continues to set the industry benchmark for innovation, styling and technology.

Warranty Information

Find out everything you need to know about the product warranty

Injen Technology offers a 1 Year Warranty to the original purchaser against defects in material and workmanship on all intake systems excluding the filter element. Injen Technology will replace at no charge, any intake pipe considered by Injen Technology to be defective.

The warranty is void if the warranty card is not returned to Injen Technology within the first 30 days of purchase. Any and all warranty coverage is limited to the repair or replacement of the defective part only, at Injen Technology's discretion. Proof of purchase is required. The warranty does not cover incidental or consequential damages, nor does it cover the cost of installation or removal of the defective part or its replacement. All warranty items must be sent freight prepaid with a valid RMA (Return Merchandise Authorization) number and copy of original invoice.


Injen Technology reserves the right to make changes in design, material and specifications, or to make product changes as deemed necessary without prior notice. Injen Technology reserves the right to change the design of any product without assuming any obligation to modify product previously manufactured.


The Magnusson-Moss Warranty - Federal Trade Commission Improvement Act of 1975 protects consumers from such fraudulent activity by new car dealers. Under this Act, aftermarket equipment that improves performance does not void a vehicle manufacturer's original warranty, unless the warranty clearly states the addition of aftermarket equipment automatically voids your vehicle's warranty or if it can be proven that the aftermarket device is the direct cause of the failure. The easiest way to check this is to look in your owner's manual under, "what is notcovered". Under Magnusson-Moss Act a dealer must prove, not just vocalize, that aftermarket equipment caused the need for repairs before they can deny warranty coverage. If they cannot prove such claim-or offer an explanation - it is your legal right to demand compliance with the warranty. The Federal Trade Commission administers the Magnusson-Moss Act and monitors compliance with warranty law. Ct cause of the failure. The easiest way to check this is to look in your owner's - Moss Act a dealer must prove, not just vocalize, that aftermarket equipment caused the need for repairs.

Magnuson-Moss Warranty Act:
Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)) Learn More

Product Reviews


Every Customer can leave a review about our service and the product that was purchased. In order to leave your review for your new product, please follow the link in the email you receive after completing your purchase. You can rate appearance, ease of installation, price/value and product quality.

Injen® - SP Series Air Intake System
Injen® - SP Series Short Ram Air Intake System
Average Rating: 4.8 of 5
5 of 5
The SRI shipped within a week but once I got it, it only took about 30 mins to install and I love it! You have so much extra room in your engine bay but it looks phenomenal. You can definitely hear the difference and feel the difference. I highly recommend it to whoever is wanting a better performing car.
CPosted by (Columbus, OH) /
2007 Honda Civic Si
Was this review helpful for you? Yes
4.8 of 5
The intake is amazing, l love it, lol. Worth every penny. CARiD did a great job shipping, I plan on buying more from them.
MPosted by (Centerburg, OH) /
2011 Honda Civic Si
Was this review helpful for you? Yes
5 of 5
Awesome Intake
Does exactly what it's supposed to do, and I love it. Made much more room in my engine bay and makes my engine sound so much more aggressive.
JPosted by (Allen, TX) /
2011 Honda Civic Si
Was this review helpful for you? Yes
4.3 of 5
Good Intake
My OEM filter was pretty bad before I changed to a SRI so I noticed significantly better acceleration and there is a Dramatic change in sound especially in VTec. Product was as described, delivered in good condition. I didn't like the hoops I had to jump through to get past the fraud management at, shipping and billing address are the same and Mastercard approved the purchase but held up the order for almost a week waiting to confirm that I was the person ordering it? Fraud management isn't to protect the customer, we have that with our credit cards. Its to protect the business against losses and its really really annoying. That being said they were polite about it, and once the product was in the mail, it was delivered fairly quickly to New Brunswick, Canada. The product loses points in installation for me due to the finicky nature of the design in that it has to be positioned just right to make sure the end of the filter doesn't rattle on the brake master cyl. If this happens to you, just check that the filter is slid onto the tube far enough. It is however one of the only intakes that you can put on an SI without the check engine light coming on, so kudos INJEN. Make sure during installation you install all of the clamps in a way that you can loosen and tighten them while the thing is in position on the engine in case you have to adjust after running for a little while.
WPosted by (Moncton, NB) /
2008 Honda Civic Si
Was this review helpful for you? Yes2  people found this review helpful.

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