So yeah, like the title says, it runs rough and sluggish on petrol, seriously under powered.

Back in the day when I first got the car, I did the usual small mods and managed to get 120kw to the floor on petrol and 93kw to the floor on lpg.
Now the lpg makes WAY more power than petrol, and I have no idea why, I've gone through replacing plugs and leads, cleaned the oxygen sensor, checked the cap and button, checked and set the base timing, ect ect.

The fuel pump was replaced recently, I did the fuel filter and Injectors just before that.
The thing that's most notable is that after a while of driving the car will just randomly start running like s**t, the idle becomes rough and you can't even accelerate on petrol, I'm usually forced to switch over to lpg in which case it runs fine?

Any info and help would be appreciated!

Fuel pressure reg issues?

Cheers

ToranaGuy

injectors? or fuel regulator?

l have a new v8 fuel rail and regulator if interested

gassa