C&L Performance Hemi Air Intake System

C&L AIR INTAKE SYSTEMS
5.7L & 6.1L DODGE CHARGER, DODGE MAGNUM, 2008-2009 DODGE CHALLENGER SRT8 & 300C
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C&L Performance is proud to announce the availability of an ALL NEW air intake upgrade for owners of 5.7L and 6.1L SRT-8 Chrysler passenger car vehicles. These systems are designed to work with all HEMI equipped late model Charger, Magnum and 300C models. We GUARANTEE that this is the highest flowing air intake system available for these vehicles, and it will support a higher level of power than any other competing units.

Scroll down to Check out the NEW DYNO TESTS of our Air Induction Systems and our C&L Modified Intake Manifold performed on our new 2008 Challenger SRT8 and DiabloSport's Dyno test of our H401 System on their Chrysler 300 SRT8.

Our new intake consists of an all new CNC machined cast aluminum inlet pipe assembly (with provisions for the IAT sensor, PCV hose connection and a special nitrous boss), a molded filter shroud assembly that attaches to the lower half of the factory air box assembly and a custom washable air filter that was developed specifically for this system. The air filter in this package maximizes the total amount of available area inside of the shroud assembly, and features over 180 square inches of filtration surface area! The original paper filter, which is more restrictive per square inch than our cotton mesh filter, has a total of only 89 square inches of filtration. Although the filter is visible when the hood is open, our rubber trim seal at the top of the filter shroud isolates the filter from the engine compartment heat once the hood is closed. This ensures that all airflow that enters the filter comes from below the body of the vehicle, just like the factory arrangement.

While developing this system, we noticed that manufacturers of existing HEMI intake upgrades were making "sensational" power claims. One particular manufacturer, who states in their advertising and literature that their intake adds "21 rear wheel horsepower", sells an intake that flows less than 720 CFM. Another manufacturer, who claims to have been producing (up to this time) the "highest flowing" air intake for these vehicles, advertises a system with a maximum flow capacity of 847 CFM.

Our new assembly, which is airflow restricted only by the size of the factory throttle body, features a full 4" diameter inlet pipe assembly and flows 935 CFM, even when attached to a stock HEMI throttle body opening. The maximum flow capacity for our system is restricted by the fact that the factory throttle body has an outside diameter of only 3.5". When this restriction is eliminated (simulating a 4" throttle body opening), our new system flows an amazing 1,015 CFM! Click here to see the Air Flow Comparison

It is our understanding that a new 4" throttle body is in the works for these vehicles, so our new air intake assembly is the ONLY one available that will be able to easily support the size and flow requirements for this new product, once it becomes available. ALL other existing air intake upgrades for these vehicles are designed around the size of the stock throttle body, which has a diameter of 3.5", with many of them utilizing even smaller plumbing between the air filter and throttle body. "Air Velocity" on these vehicles is not as important as maximum flow capacity, due to the fact that these vehicles utilize a speed density computer system. This means that with the absence of a mass airflow sensor, you do not have to worry about the flow capacity of the assembly effecting the computer's perception of air mass entering the engine.

Throttle Body Note: Aftermarket throttle bodies, such as the Arrington, that are physically longer than the factory throttle body will move the air intake assembly forward in the engine compartment. In some cases, such as the SRT8 Magnum, moving the air intake forward can cause the air intake to rub against the hood. If this happens, you can machine the front of the intake manifold to accomodate the extra length of these throttle bodies. For example: The Arrington throttle body is 3/4" longer than the factory throttle body and to accomodate this extra length you should machine 3/4" off the front of the manifold.

Dyno testing on 3 different test vehicles (SRT-8 Chrysler 300C, 5.7L Dodge Charger and a 5.7L Magnum) have shown typical performance gains of between 10-13 rear wheel horsepower. "Immediate" gains of as much as 19 rear wheel horsepower have been observed on the first dyno pull after installation of the intake assembly, but cannot be considered as valid. Once the computer adjusts to the increased airflow delivered to the engine, power settles in at around 13 HP over stock, as the air/fuel ratio will then stabilize to the exact same level as the stock baseline pulls. This is due to the fact that the first "after" pull does not give the factory computer the ability (enough time) to compensate for the sudden change in airflow available to the engine, and air/fuel ratio is typically leaner than stock during this "first" modified pull.

Charger Horsepower Comparison SRT8 Horsepower Comparison

Subsequent runs will typically show that the air/fuel ratio has stabilized to match the original baseline (stock) pulls. Although using the very first "after" pull makes for sensational power claims, it is very misleading, and is NOT representative of actual results in the "real world" during normal driving conditions. Please see the dyno charts on this page for details from the testing of each of the three test vehicles. All dyno tests were performed on the same dyno, with each corresponding vehicle having all tests performed on the same day, with no notable change in conditions during testing. All pulls were also performed in 3rd gear. Allowing the vehicle to "run out" in 4th gear on the dyno may have produced slightly higher (peak) numbers "overall", but it would not allow us to produce a singular HP "graph" like what most people are used to seeing.

Dyno testing on the 5.7L Magnum vehicle has also provided us with the opportunity to test some tuning adjustments to complement our new intake assembly. These changes were utilized with a Diablosport Predator tuner. Using their generic "cold air tune" as a base, we found that the air/fuel ratio was a bit richer than ideal. After making some adjustments to the tune (but still not completely optimized), we were able to see maximum improvements of 30 to 35 rear wheel horsepower between the air intake and tuner combined (See the provided dyno test for detailed results). Since we have a good working relationship with Diablosport, we intend on developing "C&L specific" cold air tunes to be implemented into a new "C&L" version of the Predator for the Chrysler HEMI passenger car applications. These tunes are being developed with the co-operation of Bamachips (www.bamachips.com) and they will be implemented into the new programmer to ensure true "plug and play" operation in the new "C&L Specific" HEMI Predator tuners. We hope to have this tune combo available soon;however, we are currently offering our System with a DiabloSport Tuner which includes the "performance cai" tune.

Magnum Intake Test Magnum Intake & Tune Test

TESTING UPDATE: Product testing continues with our new 2008 Challenger SRT8. In stock configuration the Challenger put down 333 RWHP. While this number is lower than expected, we expect to gain a few horsepower once the engine has a few more miles on it. With the installation of our H401 System, we gained 18 RWHP over stock. Knowing that we would be adjusting the tune, we invited Doug of Bamachips to our first dyno session with the new Challenger. With the uploading of our new custom Diablo tune we saw an additional 17 RWHP. Click here to view the Dyno Testing of our 2008 Challenger SRT8 before and after C&L H401 System and Custom Diablo Tune.

Click here to view a detailed graph with HP numbers and air fuel ratios of each configuration tested.

The following dyno test was performed by DiabloSport while testing the new C&L Hemi Air Induction System on their in-house 300 model SRT8 owned by George Nadjarian. According to Johan at DiabloSport, the gain of 18 HP they experienced is higher than any other air intake assembly they have tested on this vehicle. Other air intake assemblies tested on this vehicle showed a typical gain of around 10 RWHP.Click here to view the dyno test of our Air Induction System performed by DiabloSport on their Chrysler 300 SRT8.
We have also been looking into the possibility of manufacturing an aftermarket intake manifold for the 5.7L and 6.1L HEMI passenger cars. In order to determine whether or not the factory manifold could be improved upon, we modified one. Each Intake port now flows 350 cfm per runner. We installed our C&L modified intake manifold on our new Challenger and due to the engine being completely cold the Challenger with the C&L modified factory intake manifold put down 391 RWHP. We did a few more pulls and with the engine warm the Challenger put down a consistant 377 RWHP. Click here to see the Dyno Comparison before and After the installation of the C&L modified Intake Manifold on our 2008 Challenger SRT8.

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C&L Performance Online Store!

PART# APPLICATION PRICE

H400 C&L Induction System 5.7L Charger, 300C & Magnum $299.00

H400T C&L Induction System & DiabloSport Tuner 5.7L Charger, 300C & Magnum $679.00

H401 C&L Induction System 6.1L SRT8 Charger, Challenger, Magnum & 300C $299.00

H401T C&L Induction System & DiabloSport Tuner 6.1L SRT8 Charger, Magnum, Challenger & 300C $679.00

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