Is the HHO unit a modification of the car, will it effect manufacturers warranty?
The HHO unit isnt a modification, it is an addition and as such has no effect upon guarantees. In the USA this was established in a court case under the Moss Magnuson Act. This Act stipulates that a dealer cannot void a warranty because a vehicle is fitted with aftermarket parts. In 2003 the European Union brought in further legislation affecting the motor trade hrough the Block Exemption Regulations (BER) which closed loopholes that the warranty companies were using to get out of paying warranties to thier customers. BER states that a warranty company has to prove beyond all reasonable doubt that the after market addition directly caused an engine failure or impairment to the vehicles performance. This in practice neccesitates the commission of an independent automotive engineer to provide burden of proof and the need to go to court. The European Commission have declared that any clause to the contrary in a warranty document would represent ‘an unjustified restriction on the consumer’