EFi kits.. how are they different?

Carburetor & CNG.

CNG conversion on carburetor vehicle are done on a technology of Fumigation or commonly known as Mixer (ventury). An apparatus called a Air/CNG mixer is bolted on top of a carburetor or sandwiched between the carburetor unit and the airfilter casing.

With fumigation, the mixer introduces CNG along with the fresh air (filtered by the airfilter) and swirling Air-CNG on a Vortex pattern (like hurricane twisting) into the carburetor. In short, CNG is being carbureted (mixed) with Air. The concept is similar to mixing droplet of petrol with air in the carburetor unit.


EFI & SIS CNG Technology.

On EFI-vehicle, there are 2 main technologies that are being applied, that is (1) EFI Fumigation and (2) Sequential Injection System. Here is the breakdown on the comparative technologies:


EFI & Fumigation.

On the EFI-vehicle, you may see a Mixer attached between the airfilter hose and the Throttle Body Opening. This vehicle is using a Fumigation Technology, which is actually a GAS carburetion. Electronics like Injector Emulator and Lambda Emulator are meant to fool or deceive the EFI-ECU, sending you NO warning light or 'Check Engine' Alert on your speedometer.


In Petrol-mode, your vehicle is operating on FULL Petrol Injection (intelligent Fuel Management with metered petrol-liquid injection, directly into the combustion chamber). But when you operate in CNG-mode, you have downgraded your Fuel system to a Gas Carburetor.

The Fumigation CNG mixer acts as your traditional Carburetor Unit, pre-mixing your air with CNG before the Throttle Body. The Injector Emulator prevents the Petrol injector to open, by introducing current resistance or Ohm. The lambda (oxygen) sensor is fooled by the Lambda Emulator to provide the 'correct' stoichemetric reading � although it is now incorrect at CNG-mode.

With EFI-Mixer-Fumigation technology, you have a Carburetor-Engine on CNG-mode, and an EFI-Engine Management System for petrol-mode. In conclusion, EFI-mixer conversion is in fact a CARBURETOR on CNG.

Incidentally, the Throttle Body�s buttervalve has become the Buttervalve for your newly-introduced �CNG Mixer Carburetor Unit�. The entire Throttle Body is converted into a Big & Long Intake Manifold. This technology can lead to backfires.

Thus, EFI-CNG Fumigation technology is actually Gas carburetor system. On CNG mode, your vehicle is No longer intelligent.






EFI & Sequential Injection System (SIS).

To prevent Gas Carburetor-mode, your vehicle can be installed with Sequential Gas Injection. Holes will be drilled nearest to your engine Intake Valve at an angle, and injector giggler (tips) will be inserted. The gigglers are used to spray CNG directly into your combustion chambers.

In fact, the CNG Sequential Gas Injector operates like your Petrol Injectors, but it sprays purely CNG. Each injector spray a metered volume of CNG on what we can as �pulse width� or duration of the injector remains open to spray in gas. The longer it remans open, more CNG will be injected in at 40psi or 3 bar.

Programming the CNG Injector pulse width is very important, and you need to understand Fuel Mapping vs Ignition Mapping. This EFI-Sequential Gas Injection is like Petrol Injection Technology.

New Revolution in the World of CNG/LPG.

Another invention by Italian Engineers, State of art technology.

No Complaints anymore.
No Power Loss. (Pickup)
No Back Fire.
No Need to visit workshops again and again. (Idle Setting)
No Fuel Losses. (Better Mileage) 35% - 40%
No Limit of CC (650 � 6000 cc)

Completely Computerized, Fully Automatic LO-GAS Sequential Injection CNG/LPG Kits for EFI Vehicles.

For Turbo or non Turbo Vehicles, For Lambda or non Lambda, Choice of Timed, Acceleration, De-acceleration conversion of Alternate fuel, More Mileage. Excellent Performance