It depends on the vehicle, and the kit used. In most cases, it does not.  If you are about to buy a new vehicle, please call us and we can advise about special options to select in order to make a propane conversion easier.

Most conversion kits feature a tank specially designed to fit in a vehicle’s spare tire carrier location. If you don’t wish to sacrifice your spare tire room, extended range tanks of 50 to 80 gallons are available for mounting in truck beds or frame mounting on vehicles that have space available for it. For vehicles converted to a dedicated propane system, a propane tank can usually be fitted where the gasoline tank was previously.

For newer vehicles, the conversion kit must be EPA certified to be legal to use in the United States. Older vehicles that are more than 10 years old or have over 120,000 miles are sometimes exempt from this rule, as they are considered “beyond useful life,” by the EPA. EPA-approved kits are available for most naturally aspirated engines used in fleet vehicles, SUVs, and some passenger cars.

Yes! Ford, General Motors, Freightliner, and several other manufacturers offer vehicles that are converted to autogas after rolling off the assembly line by a Qualified Vehicle Modifier and have full warranty coverage and serviceability at the dealership they came from. 

The ICOM propane conversion does not splice into the factory wiring harness or fuel system at all, and will not cause any warning lights to come on. The only wiring into the vehicle is to the battery and 1 wire to a spark plug for RPM monitoring.

Since holes must be drilled into the intake manifold for injector placement, (for a bi-fuel conversion) reversing a conversion may require installing a new intake manifold or plugging these holes in some other way.

A properly installed and tuned conversion should, in most cases, not cause any trouble for a vehicle’s onboard diagnostic systems or ECM/ECU.