[motorheadinc]

Apart from the installation and quality of parts used another factor is the gas container.
What is the general practice in small towns is to get an LPG kit fitted and use domestic LPG cylinders (as the gas is subsidized and easily available) kept in the boot.
The domestic cylinders are made of thinner metal and the rise in pressure and forces of impact are too much for them to handle.
Hence they explode.