Originally Posted by CarDomain.com Product Overview & Manufacturer Claims

AEM Cold Air intakes create MORE horsepower than cheaper inferior intake systems. Only AEM intakes feature CNC mandrel-bent 6061 aluminum intake pipes that are individually tuned in both length and diameter to maximize power in each application. Every AEM intake is powder coated and has TIG-welded fittings and brackets. AEM Cold Air systems relocate the filter outside of the engine compartment for a cooler intake charge and more power over the rpm range.

Never oil your air filter again!
For filtration, AEM utilizes their new, revolutionary DRYFLOW Synthetic Filter to deliver superior filtration and equal performance compared to an oiled filter. The DRYFLOW Synthetic filter's unique non-woven polyester filter media is independently-tested to deliver 98% initial filtration efficiency (up to 99.4% cumulative efficiency). Oiled filter initial efficiency is typically 90% to 95% efficient . Plus, AEM's DRYFLOW Synthetic filter eliminates any warranty concerns on new vehicles because there is no chance of oil traveling up the inlet path and damaging the Mass Airflow (MAF) sensor. It's also much easier to clean and since you don't have to oil after cleaning (or wait for the oil to wick), service time is cut by approximately 90%! Just soap it, rinse it, shake it dry and go!

Features

• Will NOT void your new vehicle's warranty!
• AEM's unique non-woven filter media never needs oil — less down time between cleanings and no more chance of over-oiling
• Dyno tested to produce maximum gain throughout the powerband
• Only air induction systems on the market that utilize a complete hardware kit with soft mounts for a guaranteed perfect fit every time
• Every intake system is C.A.R.B. exempt or pending exemption (50 state legal)
• Stainless-steel, double-wound clamp and fiber-reinforced silicone couplers for unsurpassed reliability
• A mineral reinforced plastic interior cage increases structural rigidity — it's virtually impossible to collapse! No mesh screen means no more filter damage from bumps during installation or cleaning and no corrosion damage.
• Element is cleanable and is guaranteed for Life!
• Manufactured and assembled in the USA

Tech Tip: To avoid the possibility of introducing water into the intake system and hydrolocking your engine, the use of the AEM Air Bypass Valve is highly recommended.

Originally Posted by Fujita Official Manufacturer Description

COLD AIR INTAKE SYSTEMS
A Cold Air Intake is traditionally longer and in most cases extended behind the bumper cover so that it can ingest direct air that is both cooler and denser. In addition to more direct air, the longer plenum achieves higher torque gains as well as impressive horsepower figures. Depending on the complexity of the plenum route, the Fujita Cold Air Intake may come as a 1 piece or 2 piece intake system. Different diameters, filters, and bends are all key factors of the R&D process of each Cold Air Intake. The in-house Dynojet is the final judge of which intake configuration will make it to production. Air/Fuel ratios are also an important factor in testing the Cold Air Intake, ensuring that safe and near factory levels are maintained in order to not trip any electronic sensors on the vehicle.

Features

• Each Fujita intake system is made with 6061 T6 Aluminum Alloy. After each application is bent and inspected, we polish it for an extremely bright finish.
  
• Carbon Plated T-bolt Clamps are used in our applications due to their strength and reliability. All of our T-bolt Clamps either meet or exceed the SAE Spec. J1508.
  
• CNC machined air mass sensor fittings are used to ensure proper air/fuel ratios throughout the power curve. Each sensor is carefully engineered for accuracy.
  
• We use Hose Techniques® Silicone Hose w/ Dupont Nomex reinforcement to provide stability during both extreme hot and cold conditions, -65°F(-54°C) to +500°F (+260°C)
  
• TIG Welded brackets are used in conjunction with Rubber Vibration Mount Dampening to stabilize the intake system from unwanted stress during load.
  
• Each Fujita Intake System comes with a Super Flow High Performance Air Filter™ designed to maximize efficiency without compensating air filtration.

Originally Posted by CarDomain.com Product Overview & Manufacturer Claims

The Injen Technology intake system is a high-performance, dyno-proven system made of CNC mandrel bent 6061 T-6 aluminum alloy. Each intake is carefully engineered for a perfect fit and superior performance. Many other intakes on the market are made of only 3.00" diameter tubes. This may cause friction between the battery and the intake system, dented hoods, or an unbalanced air fuel ratio, which can be harmful to your engine. Injen Technology has taken extra measures to ensure that consumers get exactly what they paid for: Optimum throttle response. Injen Technologies has in-house capabilities for bending 2.25", 2.50", 2.75", and 3.00" diameter tubes on various bend radii.

The SP series from Injen also incorporates MR Technology, an Injen exclusive that stabilizes the vehicles air-fuel ratio and tunes the intake to be within safe factory limits of performance. Injen tests and tunes every intake for optimal performance. With MR Technology, they take the tuning stage one step further. Typically, vehicles that require MAF sensors have had to simply bolt their MAF sensor onto the aftermarket intake housing. This made for a simple installation, but it changed the diameter of piping where air flowed past the sensor, changing the characteristics of the air to fuel ratio the MAF expected to see. This could lead to unstable or lean air/fuel mixtures which can damage high-horsepower or high-performance engines. Injen has carefully tested and tuned their intakes with MR Technology to offer the most stable balance between horsepower and safe operating parameters by changing the diameter of the sensor piping where necessary.

Injen polishes or powder coats every intake for those who are conscious of aesthetics along with horsepower gain. With the use of 1/4" thick 6061 T-6 aluminum and precise CNC machined brackets and adapters, you are guaranteed an exact fit every time. Every Injen air filter is made from highly resistant urethane rubber and comes with a unique built-in velocity stack to smooth the incoming air. A four-ply cotton gauze element filters out harmful particles. Not only does Injen dedicate themselves to making precisely crafted intakes, they also back it with a limited lifetime warranty to ensure a quality intake for years to come.

Features

• CNC Mandrel Bent 6061 T-6 Aluminum Aerospace Alloy Construction
• TIG Welded Vacuum Fittings and Brackets for a Precision Fit
• MR Technology for Improved Air/Fuel Ratio Stability
• Injen Urethane Filter with Built-In Velocity Stack for Maximized Air Flow
• All Intakes Are CARB Certified, or Are Currently Pending
• Rubber Vibra-Mount To Eliminate Damage Due To Engine Torque
• Stainless Steel Clamps
• Converts To Short Ram

Originally Posted by K&N Official Description

Built for performance and show, the Typhoon™ Air Intake System is a free-flowing mandrel-bent aluminum tube induction system designed to fit many sport compact performance vehicles. Typhoon intakes come in one of three designs; cold air intakes (CA), short ram intakes (SR), or complete cold air (CCA) intakes which can be configured as either a cold air intake or a short ram intake. Some Typhoon's have high quality finish options including polished aluminum (part ends with TP), powder coated blue (part ends in TB), powder coated red (part ends in TR), and powder coated silver (ends in TS) among others. K&N intake systems replace your vehicle's restrictive factory air filter and air intake housing. K&N intakes are designed to dramatically reduce intake restriction allowing more air flow to your engine. More air means more usable power and acceleration throughout the engine's RPM range.

69-4517TTK Product Specifications

• Product Style: 69 Series Typhoon Kits
• Estimated Horsepower Gain: 15.94 HP @ 5900 RPM
• Color: Textured Black
• Replacement Filter: RU-5147
• CARB Exempt: No
• System Type: Short-ram intake system
• Weight: 7.9 lb (3.6 kg)
• Product Box Length: 19.3 in (490 mm)
• Product Box Width: 14.5 in (368 mm)
• Product Box Height: 8.4 in (213 mm)

Originally Posted by WeaponR Official Website

The Secret Weapon Intake was designed, to increase air intake volume to the engine. The concept is to create two different air velocity profiles, one traveling at higher speeds than the other. This technology increases air volume and speed to the engine, which naturally feeds the engine 3x more air than the conventional air intake system. The intake pipe is bent out of high quality 6061 Aluminum on our Automated CNC mandrel bender. Polished to a high show quality finish. The SW1 Air filter features a tuned velocity stack to increase velocity and decrease turbulence. Only Comes In Polished. 1 Million Mile Limited Warranty Open pore high density re-usable foam Over 250 applications for Car’s / Trucks / SUV’s

Originally Posted by Z-Spec Catalog Description from Official Website

Comes complete with all clamps, adapters, 3" polished aluminum pipe and K&N cone filter.

Originally Posted by Rebel AutoWorxs Description From Group Buy Thread

2.4L Cold Air Intake

- Full 3" Stainless Steel Piping
- Filter located below headlight for maximum cold air
- Polished finished

Now we take it even further with HP Tuners logs, just take a look.

Results:

Stock:

Air Intake Temperature 84*F after the run
Air Flow 16.37 lb/min
Engine Coolant Temperature 199*F

With Rebel Intake:

Air Intake Temperature 75*F after the run
Air Flow 17.74 lb/min
Engine Coolant Temperature 187*F

We approx. a gain of 15WHP and 10WTQ

Originally Posted by WhiteSSBalt

You forgot the Weapon-R secret weapon and the RSM Racing/Z-spec short ram.

Just thought I'd contribute.

Originally Posted by Gturismo1

Happen to have the links for those? I'd be happy to put them up

Originally Posted by CSM Huber

Good work! And needed too.... When you are new to the forum, finding the right info for 2.4L NA Intake isn't easy. Since the 2.4L Continuous VVT is very different from the 2.2 cam, the 2.4L NA air flow requirements (and HP gain potentials) are not met with induction systems engineered for a compromise cam.

Originally Posted by Gturismo1

That is the biggest problem I've found. Most of the intakes above are for a 2.2, but they fit the 2.4. The K&N is the only one that was specifically engineered for the 2.4. Hopefully, we'll start seeing some more 2.4 specific intakes in the near future. That isn't saying that the other intakes aren't as good, quite the opposite, many people have reported great gains with a 2.2 engineered intake

Originally Posted by Evil C

Fujita nets a whole 2 hp GJ fujita i can net more than that with a peice of dryer hose and a Brand X cone filter.

Originally Posted by WhiteSSBalt

Btw, where's the Z-Spec intake?! No ones rocking that intake it seems, so we really need to list it on this thread and open peoples eyes to it. I'm sure a lot of people don't know it exists. Z-spec also sells a pulley, brake kit, strut bar, hood and a trunk for our cars.

Originally Posted by Gturismo1

I'll try to get it up ASAP. I'm still wondering if their intake has a bung in it for reconnecting the MAF sensor. From the picture on their website, it doesn't seem like it does.

Originally Posted by Gturismo1

Just added the Z-Spec to the list, apparently the forum has a 16 image per post look, so i had to edit one of my previous posts further down the list. It was either that or lose the images, and hell if I was going to do that.

Gotta keep a little style in the 2.4 Section

Originally Posted by WhiteSSBalt

I was getting ready to say the thread is complete now, until I realized we completely forgot about the new Rebel Autoworkz 3" CAI that released about a month back specifically for the 2.4SS. Add that and then your done, I promise! lol. Well, unless you count the e-bay intakes.......but lets not, lol.

Originally Posted by LewiSS

Click on the link in my signature (GMPP Intake Dyno Numbers) for my dyno sheets for a GMPP on a 2.4 Auto with functional through-hood ram air. We ran it with the stock intake, the GMPP intake without the scoop, and the GMPP with the scoop open and functional. You can link these sheets to your post.

I'm not sure if anyone was making a video when I ran (Rockymountainecotec club was all running that day). I will check - there may be one posted on their site.