hello,
I've got a VZ Commodore with factory installed LPG and I would like some advice with a couple of issues:
- how could I advance the timing in such a way to increase the power? - LPG burns slower than
gasoline so it needs higher.
- I 'm experiencing something weird with my car: on some (cold) days it runs better with more power on other days (specially hotter days) it lacks power - it looks like there is a leaner mixture since the engine temperature is higher than normal.

I've found on this forum that I could download a software from WinALDL - 160 baud ALDL reader and then make a diagnostic cable.Could anyone tell me whether would be possible to use this software and cable to check the engine for fault codes and to tune it.
I would appreciate any answer and I thank you for your help.
Thanks,
Adrian.