In India, 3 Types of CNG Conversion Kits are available for Sale and to convert vehicles to CNG - Open Loop / Closed Loop (known as Conventional Kits) and Sequential CNG Kits
If your Car Make is 2009 and Onwards - in a most likely scenario - Sequential CNG Kits are considered superior and are Compatible. Pre 2009 Cars - basis Car Model & Engine Type has both Conventional and Sequential Kits recommended
SEQUENTIAL CNG KITS ARE BY FAR SUPERIOR:-
Better Pickup in Sequential Kits as CNG injector are separate and Petrol Injectors are Separate
Almost No Performance Tuning is Required with Sequential Kits as ECM Controls Supply and Injectors do not Conflict with Petrol Injectors
Delivers Better Fuel Mileage with Easy Maintenance as Scanning Done through Computer for Future Troubleshoot & Performance Optimization
A Right Sequential CNG Kit does not lead much to the Wear & Tear of Engine
CNG Fitment leads to only a few Percentage Performance Loss. However, Engine Life Remains Same after the installation of Sequential CNG Kits.