I drive a hyundai terracam 2.9 cdxi have been looking at a device to convert water and caustic soda to hydrogen this will be done in two cells using electro magnetic plates powered from my battery the hho gas as it is known will be introduced into the air intake that mixes with the diesel before it burns in the cylinders the on board computer would be adjusted to allow for the extra volume of air and gas sothat this would not compensate by using more diesel a switch inside the car then allows manual adjustment of the diesel to lower the amount of diesel going into the engine with the gas making up the differance for combustion i have searched the web can find no negative comments checked and am told will notaffect insurance' Is anyone using this or has heard of it. is costing £ 420 fully fitted 30 day money back garanttee