I had been having trouble with my LPG system cutting onto petrol whilst driving. Other than that, the LPG system seemed to be driving perfectly fine. (The system is a PRINS multi-valve injection). I asked J.W Auto to have a look and fix it.

When I collected the car it was immediately obvious that *something* had been done to it, as it drove like it was restricted - until I hit 3,500-4,000 rpm and it was like a turbo-charger kicking in. Driving away from the lights was torture - even buses were faster than me! The car was undriveable, and quite possibly dangerous.

I took it elsewhere, where they quickly identified it was a faulty vapour pressure switch and even contacted PRINS Australia to get it replaced under warranty. I will never go back to J.W. Auto!