Having had my and my wifes cars converted to lpg in fairly quick succession. I have introduced problems to what were perfectly good and reliable cars. Problems that the installer and the manufacterer could not fix or fix properly. Arguments between the installer and the manufacterer as to what course of action is needed to solve the issues and who was responsible for the warranty. There seems to be inherant problems with either the system or the way they were installed or both, as both systems developed similar issues. Meanwhile myself and other customers are caught up in all this. Then to add insult to injury i eventually found out that the installer closed the business, moves premises, opens up another under a similar name doing very much the same sort of work in order to avoid warranties (although he denies this is the reason, but it is so obvious) and then tries to convince me he is doing me a favour by tweeking here and there but NEVER SOLVING THE PROBLEMS.
The whole experience has been costly, frustrating, and inconvenient.