instant fuel consumption

friends, I have 307 models of 2003 model, I feel like I have trouble on the road computer for example, for example, the instant fuel consumption is 10 liters before the revolver needle comes to 3000 in the 2nd gear. I am looking forward to your help, if anyone knows the normal values, thanks in advance

I usually do it when he does not eat it when the gas is running out, he does it for 10 to 15 seconds, and then he goes to gas. When it gets gas, it returns to normal values. At the time of the first take-off, the car that burns more than 3000 rpm may be normal in 2nd gear. If LPG is near the end of the vehicle, you can do LPG maintenance.