CNG Kits for Sale (a discussion of CNG Systems)

YounkinCNG and Alternative Fuel Connection are now selling CNG Systems manufactured by RedgasCNG and Electrodiel to bring you the most affordable and proven Aspirated CNG systems available for your vehicle, we also carry Autogas Sequential Injection systems.

To Order or for more information call me @ 801 427 2284 or E Mail me at Thanks, Jim

Aspirated CNG Systems

Basic Carburated CNG System $399
Basic Fuel-injected CNG System $399
Closed-loop Fuel-injected CNG system 4 cylinder $475
Closed-loop Fuel-injected CNG system 6 cylinder $475
Closed-loop Fuel-injected CNG system 8 cylinder $475

Sequential Injection Systems

8 Cylinder Sequential Injection System $2600
6 Cylinder Sequential Injection System $2400
4Cylinder Sequential Injection System $2200

Call Jim @ 801 427 2284 to purchase or for more info

Our Aspirated systems will work on any gasoline vehicle and with special tuning are adaptable to Diesel/CNG applications. The Diel 4595 closed-loop controller is the heart of our systems for fuel-injected vehicles, unlike some of our competitor’s controllers ours is fully programmable with the program and tuning cable readily available, we also offer technical support with each system sold.

A brief description of aspirated (mixer) CNG systems.

The 2 main components in an aspirated CNG system are the pressure regulator and the mixer. The addition of a controller system which includes a ECU and Stepper Motor to regulate natural gas flow was added when closed-loop fuel-injected engines came out in the 80’s. The basic system with the regulator and the mixer still remains the most popular and most used system worldwide.

An aspirated CNG system starts with the High Pressure CNG Tank, the tank is connected to the filler and the pressure regulator with high pressure steel tubing, there may be a valve or high pressure filter between the tank and regulator.

On carburated vehicles the in-cab controller switch will be the control for the system with a 3 way switch and manometer (electronic pressure gauge), this switch when operated will turn off the gasoline through the use of an electronic shut-off in the fuel, as the gasoline runs out you switch to natural gas which is introduced through a mixer-plate above or below the carburator. The natural gas is then regulated by manifold vacuum by the regulator.

On fuel injected vehicles the simple mixer system is the same with the addition of injector emulators, these are spliced in or plugged into the vehicles injector wires and turn off the injectors when the CNG system is turned on.

A closed-loop controller is an addition to an aspirated system which uses the oxygen sensor along with the throttle position sensor and an RPM signal to operate a stepper motor (electronic valve) to control the amount of natural gas introduced into the system depending on a rich or lean condition.

A brief description of a Sequential Injection CNG system.

The Sequential Injection system still has a high pressure tank, filler, filter and regulator, the regulator is different in that it puts out a steady pressure as opposed to variable pressure. The Natural Gas is then injected by natural gas injectors which are controlled by the gasoline injector pulse. This system also uses its own MAP (manifold absolute pressure) sensor, natural gas pressure sensor, natural gas temperature sensor and coolant temperature sensor to operate and control the system.

Advantages of an Aspirated CNG System

1) Affordable ($400 to $525 without tank)
2) Easier to install
3) Less components to fail
4) Can be used on carburated vehicles
5) Tuning and setup simpler

Disadvantages of Aspirated Systems

1) Slight power loss
2) Less fuel regulation (chance of check engine lights)
3) Old technology, works best on older vehicles

Advantages of Sequential CNG Systems

1) More controlled CNG operation (fewer check engine lights)
2) Less power loss
3) Works good on newer vehicles
4) Modern system using multiple sensors to regulate Natural Gas

Disadvantages of Sequential CNG Systems

1) More expensive ($2000 up without tank)
2) Harder to install (need to remove intake manifold in many cases)
3) Harder to tune, will need tuning software and tuning expertise

I have installed many Sequential and Aspirated CNG systems, as stated they both have their advantages and disadvantages. Unfortunately due to a soft economy money is scarce and many people looking to convert are opting for the less expensive aspirated systems.

This entry was posted in Aftermarket converters, Automotive, CNG conversions, CNG kits, EPA, EPA Fanatics, mechanics, Uncategorized. Bookmark the permalink.

5 Responses to CNG Kits for Sale (a discussion of CNG Systems)

  1. 1953drtelco says:

    Can’t wait to install one of your systems. Once I secure a CNG tank locally I will be placing an order. Thanks for all the great information that you’ve posted…

  2. davekinner says:

    I am seeking more technical info on older diesel engines , like GMC 4v71 . THANKS ! Dave .

  3. Dick Duncan says:

    Tanks are the issue, what is new in the development and availability of tanks for the automotive applications?

  4. jeff says:

    When this says that aspirated systems work best on older vehicles then what is considered older? I was considering a aspirated syetem due to cost. i have a 2002 chevy, fuel injected 6 cylinder motor. Should i be considering a sequential system?

  5. Pingback: Oldies but Goodies, CNG Articles from the past… |

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