Well this sounds like its between the garage doing the work and the Nitrous kit supplyers and not the customer with the Puma. If the garage are saying its the kits fault, thats slander as nitro can be fitted long term reliably, if he doesnt blame the nitrous company, then he is liable as the car should have been checked thoroughly for worthyness of that sort of work first, fuelling correct, engine running corretly, etc, such as MSdevelopments etc would. Surely not the customers fault if the car was fine? Any other input guys??? This is just my opinion and not a legal lawwrite up thingy