Re: Doesn't make sense!!!! (156 V6)
Not sure really mate..
But, as for no injector light running on gas, most LPG systems ignore any reading from the MAF. They just run on the standard figures like when you have your MAF unplugged, and use a reading from the lambda to detect whether the car is running rich or lean. So if the ECU was ignoring any reading from the MAF, then I would assume that it wouldn't trigger the injector light. But I could be wrong.
I would get it working on petrol first, then get the gas sorted.