YEs I do this. HDV edits file MOD you are using. I explains Find this line. (text translated spanish into English)
FuelRange=(1.0, 1.0, 235)
FuelSetting=80
NumPitstopsRange=(0, 1, 100)
NumPitstopsSetting=3
Pitstop1Range=(1.0, 1.0, 100)
Pitstop1Setting=50
Pitstop2Range=(1.0, 1.0, 100)
Pitstop2Setting=50
Pitstop3Range=(1.0, 1.0, 100)
Pitstop3Setting=50
Explain
FuelRange=(1.0, 1.0, 235)
I'll explain the 235 is the amount (liters) fuel tank full
FuelSetting=80
The initial fuel quantity 80 litre
NumPitstopsSetting=3
The number of pit stops that can be performed
Pitstop1Range=(1.0, 1.0, 100)
Pitstop2Range=(1.0, 1.0, 100)
Pitstop3Range=(1.0, 1.0, 100)
100 Total Litres of fuel per pit stop tank Pit Stop 1,2,3
Pitstop1Setting=35
Pitstop2Setting=35
Pitstop3Setting=35
PitStop 1,2,3 35 liters initial fuel stop
Example F1RFT 2010 MOD file is: F1RFT.HDV (..\rFactor\GameData\Vehicles\F1RFT2010\2010\TEAMS\) Linea 37 al 46.

Remember
Backup file F1RFT.HDV Edit file .HDV mismatch join server
FuelRange=(1.0, 1.0, 235)
FuelSetting=80
NumPitstopsRange=(0, 1, 100)
NumPitstopsSetting=3
Pitstop1Range=(1.0, 1.0, 100)
Pitstop1Setting=50
Pitstop2Range=(1.0, 1.0, 100)
Pitstop2Setting=50
Pitstop3Range=(1.0, 1.0, 100)
Pitstop3Setting=50
Procedure for editing.
RACE Total laps 20
Calculate how many liters fuel requires 20 turns. (there are various programs that help to calculate fuel.. MoTeC i2 Pro, rfDynHUD v1.3.0 , Spotter 2.17 etc. )
Example: 50 liters
Recommended conbutible: 56 (for security)
Maximum total liters tank: 56 lites
for one pit stop 56/2 = 28 liters
for two pit stops 56/3 = 18.6 (19) liters
for one pit stop Change lines and mention it. changer # 235 and 100 for 28
FuelRange=(1.0, 1.0, 28)
FuelSetting=17
NumPitstopsRange=(0, 1,4)
NumPitstopsSetting=3
Pitstop1Range=(1.0, 1.0, 28)
Pitstop1Setting=35
Pitstop2Range=(1.0, 1.0, 28)
Pitstop2Setting=35
Pitstop3Range=(1.0, 1.0, 28)
Pitstop3Setting=35
this will make the AI will be forced to refuel you see in the race
Pitstop1Setting, Pitstop2Setting, Pitstop3Setting
The IA will calculate the quantity of liters for each stop NEED TO (never more 28 litre)
you do everything right. I assure you that AI will make her stop
This cheat works for me pretty well.
With this explanation to not feel able to. tells me. I'll help
Greetings to all