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A cold air intake is a device used to bring lower temperature air into a car’s internal-combustion engine, to increase engine power and efficiency.
Standard air intake systems tend to be very restrictive, in order to eliminate engine noise. Aftermarket cold air intake systems come in many different colors and sizes, and are easy to install when compared with other performance-increasing modifications. All cold air intakes operate on the principle of increasing the amount of oxygen available for combustion with fuel. Because cooler air has a higher density (greater mass per unit volume), cold air intakes generally work by introducing cooler air from outside the hot engine bay. However, the term “cold air intake” is often used to describe other methods of increasing oxygen to an engine, which may even increase the temperature of the air coming into an engine.
Some strategies used in designing cold-air intakes are:
- increasing the diameter of the air intake, allowing increased airflow.
- smoothing the interior of the intake to reduce air resistance.
- providing a more direct route to the air intake.
- tuning the length of the intake to provide maximum airflow at certain engine speeds (RPM).
- using a more efficient, less restricting air filter.
Companies that make Cold Air or Ram Air Intakes for the Infiniti G37 are Injet, Takeda, Stillen, R2C, Fujita & JWT. Stay tuned for more companies to design a Cold Air or Ram Air Intake for the Infiniti G37.
 | | Takeda USA Retain Air Intake Infiniti G37 3.7L V6 Coupe 08-09 | | Offer by: Vivid Racing | | Price: USD 348.99 | | Takeda USA Retain Air Intake Infiniti G37 3.7L V6 Coupe 08-09It's time to upgrade your vehicles intake system and improve your performance. Look no further than Takeda USA. The newest technology has been used in the creation of these intake systems. Retain is the Takeda Short Ram lineup. These intakes create simple, bolt-on horsepower that requires simple, quick installation and no bumper removal. Some of the short ram intakes include a wrinkle black heat shield. |  | |
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 | | 2009 Infiniti G37 Takeda Air Intake Systems | | Offer by: AutoAnything | | Price: USD 418.80 | | 2009 Infiniti G37 Cold Air Intake At the Guaranteed Lowest Price! Takeda Air Intake Systems In Stock Now. Read Customer Reviews, Takeda Air Intake, Takeda Cold Air Intake Systems, Takeda Intakes. For the top selection of Infiniti G37 2009 Air Intake Systems, choose AutoAnything as your trusted store. The Takeda Air Intake, Takeda Cold Air Intake Systems, Takeda Intakes will improve and personalize your vehicle. G37 Cold Air Intake by Takeda - selected by many auto enthusiasts in the top automotive discussion forums. Takeda Air Intake Systems for your 2009 Infiniti G37 will deliver the results you are looking for! Takeda Air Intake Systems - Infiniti G37 2009 - Air Intake Systems - Cold Air Intake. | | |
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| | 2008 Infiniti G37 Takeda Air Intake Systems | | Offer by: AutoAnything | | Price: USD 418.80 | | 2008 Infiniti G37 Cold Air Intake At the Guaranteed Lowest Price! Takeda Air Intake Systems In Stock Now. Read Customer Reviews, Takeda Air Intake, Takeda Cold Air Intake Systems, Takeda Intakes. For the top selection of Infiniti G37 2008 Air Intake Systems, choose AutoAnything as your trusted store. The Takeda Air Intake, Takeda Cold Air Intake Systems, Takeda Intakes will improve and personalize your vehicle. G37 Cold Air Intake by Takeda - selected by many auto enthusiasts in the top automotive discussion forums. Takeda Air Intake Systems for your 2008 Infiniti G37 will deliver the results you are looking for! Takeda Air Intake Systems - Infiniti G37 2008 - Air Intake Systems - Cold Air Intake. | | |
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| | Takeda Air Intake Systems TR-3008P Retain Short Ram Intake | | Offer by: AutoAnything | | Price: USD 418.80 | | TR-3008P Takeda Air Intake Systems fits: 2008-2009 Infiniti G37, TR-3008P Takeda Air Intake, Takeda Cold Air Intake Systems, Takeda Intakes. Takeda Air Intake, Takeda Cold Air Intake Systems, Takeda Intakes. TR-3008P | | |
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 | | 2008 Infiniti G37 Injen SP Series Cold Air Intake | | Offer by: AutoAnything | | Price: USD 505.00 | | 2008 Infiniti G37 Cold Air Intake At the Guaranteed Lowest Price! Injen Air Intake Systems In Stock Now. Read 68 Customer Reviews, Injen SP Series Cold Air Intakes. For the top selection of Infiniti G37 2008 Air Intake Systems, choose AutoAnything as your trusted store. The Injen SP Series Cold Air Intakes will improve and personalize your vehicle. G37 Cold Air Intake by Injen - selected by many auto enthusiasts in the top automotive discussion forums. Injen SP Series Cold Air Intake for your 2008 Infiniti G37 will deliver the results you are looking for! Injen SP Series Cold Air Intake - Infiniti G37 2008 - Air Intake Systems - Cold Air Intake. | | |
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| | 2009 Infiniti G37 Injen SP Series Cold Air Intake | | Offer by: AutoAnything | | Price: USD 505.00 | | 2009 Infiniti G37 Cold Air Intake At the Guaranteed Lowest Price! Injen Air Intake Systems In Stock Now. Read 68 Customer Reviews, Injen SP Series Cold Air Intakes. For the top selection of Infiniti G37 2009 Air Intake Systems, choose AutoAnything as your trusted store. The Injen SP Series Cold Air Intakes will improve and personalize your vehicle. G37 Cold Air Intake by Injen - selected by many auto enthusiasts in the top automotive discussion forums. Injen SP Series Cold Air Intake for your 2009 Infiniti G37 will deliver the results you are looking for! Injen SP Series Cold Air Intake - Infiniti G37 2009 - Air Intake Systems - Cold Air Intake. | | |
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| | Injen SP Series Cold Air Intake SP1998BLK SP Series Short Ram Intake | | Offer by: AutoAnything | | Price: USD 505.00 | | SP1998BLK Injen SP Series Cold Air Intake fits: 2008-2009 Infiniti G37, 2007-2008 Infiniti G35, SP1998BLK Injen SP Series Cold Air Intakes. Injen Intakes, Injen Intake, Injen Rs Series Cold Air Intake, Cold Air Intakes, Air Intake System, Cool Air, Cai, Air Induction. SP1998BLK | | |
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| | Injen SP Series Cold Air Intake SP1998P SP Series Short Ram Intake | | Offer by: AutoAnything | | Price: USD 505.00 | | SP1998P Injen SP Series Cold Air Intake fits: 2008-2009 Infiniti G37, 2007-2008 Infiniti G35, SP1998P Injen SP Series Cold Air Intakes. Injen Intakes, Injen Intake, Injen Rs Series Cold Air Intake, Cold Air Intakes, Air Intake System, Cool Air, Cai, Air Induction. SP1998P | | |
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 | | Stillen Gen 3 Ultra Long Tube Dual Intake Kit Nissan 370Z 09+ | | Offer by: Vivid Racing | | Price: USD 548.99 | | Stillen Gen 3 Ultra Long Tube Dual Intake Kit Nissan 370Z 09+STILLEN Introduces the All New Generation 3 Ultra Long Tube Intake for the dual throttle body VQ engines. STILLEN was the first national tuner to introduce a high flow intake for the Nissan / Infiniti VQ37 cars. The first short tube intake provided a small gain in power with a great sound. Economical and easily installed, this Generation 1 Short Tube Intake became instantly popular. Some months later STILLEN introduced the Generation 2 Long Tube Intake, featuring polished tubes, even better sound and a power gain over the Generation 1. STILLEN' s continuing dedication to getting the maximum performance from each vehicle has lead to the introduction of the new Generation 3 Ultra Long Tube Intake. This intake has a radically new design that provides dramatically better power than any intake on the market for the VQ37 equipped vehicle&rsquo s. STILLEN' s R& D team went engineered and dyno tested more than 50 variations before being satisfied that this system is the best that can be made for the VQ37 engines. The new Gen 3 Ultra Long Tube Intake places two large K& N filters in front of the radiator. Strategic placement of the filters allow for optimum cold air flow and easy filter removal for cleaning. It features additional polished tubes that pass through the front core support, larger air filters than the Generation 2 unit. On some applications such as the G37 a urethane splash guard is included in the kit to help protect the filter. This is only necessary on vehicles with larger grill openings from the factory. All kits feature a system of varied diameter tubing and steps to maximize air velocity. The power result: A dyno-proven 18.5 horsepower gain at the wheels on the G37 Coupe and 17.5 horsepower on the 370Z. This translates to an estimated 20-22 horsepower gain at the flywheel! For G37/G35 Sedan owners, gains are 14 horsepower at the wheels. No other intake for the VQ can match these power gains! Recommended installation requires removal of the front fascia clip (not absolutely necessary for some vehicles, but significantly aids in ease of installation) and slightly enlarging the holes through the front core support. Installation time is estimated at two hours for an experienced technician. No other part relocation or parts removal is required. | | |
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 | | Injen SP Series Cold Air Intake SP1997BLK SP Series Cold Air Intake | | Offer by: AutoAnything | | Price: USD 725.00 | | SP1997BLK Injen SP Series Cold Air Intake fits: 2008-2009 Infiniti G37, SP1997BLK Injen SP Series Cold Air Intakes. Injen Intakes, Injen Intake, Injen Rs Series Cold Air Intake, Cold Air Intakes, Air Intake System, Cool Air, Cai, Air Induction. SP1997BLK | | |
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| | Injen SP Series Cold Air Intake SP1997P SP Series Cold Air Intake | | Offer by: AutoAnything | | Price: USD 725.00 | | SP1997P Injen SP Series Cold Air Intake fits: 2008-2009 Infiniti G37, SP1997P Injen SP Series Cold Air Intakes. Injen Intakes, Injen Intake, Injen Rs Series Cold Air Intake, Cold Air Intakes, Air Intake System, Cool Air, Cai, Air Induction. SP1997P | | |
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