Agree with vinj. I have a venturi kit installed on my civic since 2008 at the height of petrol price of 62/li. Wala naman problema. Sometimes there is a smell of lpg inside the cabin but this can be easily detected and fixed using the olds school soap and water. In less than 2 year recover na ang investment sa kit. Minsan lang nauubos ang lpg sa mga stations. At nakakapagtaka ayaw ng bumaba sa 25 and below range. Parang may nag cocontrol ba.