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Common Questions & Answers to Versus LPG/CNG Kits

Q: Will your LPG/CNG kits work with my vehicle?

A: These kits are designed for a 4th generation vehicle. 4th generation vehicles are called sequential fuel injected vehicles, or multi-point fuel injected vehicles. Most of today's vehicles manufactured from 1990 through 2010 have 4th generation systems. We do not have a database of vehicles which can tell us whether your vehicle is 4th generation or not. If you are unsure, please contact your vehicle's manufacturer.


Q: Can I Still Run on Gasoline?

A: This is a dual fuel system. Your vehicle must start on gasoline and once the engine is warm enough, switching to LPG/CNG is possible. You can switch back to gasoline at any time and the vehicle will automatically switch back to gasoline if there is a problem with the LPG/CNG system.


Q: Is there any power loss when running on LPG or CNG?

A: No. LPG/CNG fuels burn more efficiently than gasoline and there will be no power loss to the engine.


Q: What is the fuel economy (MPG) of Propane and CNG?

A: The energy density of LPG (enerrgy per unit of volume) is less than gasoline. CNG has very low energy density since it is still in gaseous form. When comparing prices on the two fuels, it is best to convert the LPG/CNG to a price per gasoline equivalent. LPG has a gasoline equivalent of 1.35 and 3.82 for CNG at 3600 psi. What this means is that for a gallon of gasoline burned, it takes a 1.35 gallons of LPG or 3.82 gallons of CNG to move the same distance. So if your fuel economy is 30 mpg, with LPG it will be 22.2 mpg and with CNG 7.85 mpg.


Q: How much money can I save by using LPG/CNG?

In order to compare savings of using each fuel instead of gasoline, you must find prices based on gasoline equivalents or weight. When using weight, simply take the density of gasoline which is 6 lb/gallon, convert to dollars per pound, and then compare to the dollars per pound on the LPG/CNG. Most consumers will find LPG to be about half the cost of gasoline and CNG about a quarter of the cost of gasoline.


Q: Will I pass emissions testing with an LPG or CNG Kit?

A: LPG and CNG both burn cleaner than gasoline. There should be no issues with emissions testing. However, if there is concern during the test, simply run on gasoline during the emissions testing.


Q: Do you install LPG/CNG kits?

A: No. We are only distributors of these kits.


Q: Who can install an LPG or CNG kit?

A: Only a certified mechanic or professional may install an LPG or CNG kit. Most of our customers should download the installation manual and provide it to their local mechanics to see if they feel comfortable with performing the installation. We do not have the staff to provide general installation help. We do have the ability to communicate with the manufacturer of the kits if an unusual problem is encountered.


Q: How long does it take to install an LPG or CNG kit?

A: For a skilled mechanic, it should take about 1-2 days to perform an installation.


Q: Where do I find LPG or CNG for fueling my vehicle?

A: LPG and CNG are beginning to become popular in the USA. Check to see if there are any fueling stations in your area. If there are none, check with your local gas companies. Local gas companies can also help with finding standard cylindrical tanks.


Q: Where can I find a tank?

A: We carry toroidal (spare tire compartment) LPG tanks and cylindrical CNG tanks. You may also be able to find cylinderical tanks from your local gas companies or tank manufacturers.


Q: Are the kits EPA certified?

A: No. These kits are intended for off-road use only.


Q: Do the kits trigger any check engine lights?

A: No. The kit will operate the vehicle as if nothing has been changed.


Q: Can the LPG/CNG kits work on a diesel?

A: No. These kits will only work with 4th generation gasoline systems. The manufacturer is currently working on kits for diesels, but they are far off from achieving perfect success on them.


Q: Do the LPG/CNG kits require continuous calibration?

A: After the first 500 miles, the seals in the reducer will have been broken in and the kit should be recalibrated for optimal operation. Once the kit is broken in and recalibrated, there will be no need for recalibration.


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