VR 5L Duel Fuel Perfect On Gas, Stutters Badly On Fuel

[Timmos]

My vy does the opposite at the moment, but i can have it tuned to run well on 1 or the other.... not for both

 

[strgas]

to the OP what system is installed on your car ?

 

[deXtrous]

Oh god... I have a very similar problem. My gas was running PERFECT but my car would never start on fuel. When I started on gas and kicked it to fuel it would just cut out after a little bit. I tried replacing the pump, fuel filter, got the injectors check out and all.

Now it's at an electrical mechanics. It's been there for two days and they're telling me they're still sussing out what's wrong with it.

Big bill incoming They think it's something to do with the gas ECM. God damn.