It will be cool to add an option to disable autoshifting and to let only manual shifting on server.

Can't you do this already?

If not, it's fairly easy to implement with InSim.

You can set this option, and others, with LFSLapper.

Quote :

# Racer flags
# "Y" = Yes
# "N" = No
# "*"" = Yes or No
# Local variable
#-------------------
$SwapSide = "*";
$AutoGears = "*";
$Shifter = "*";
$HelpBrake = "*";
$AxisClutch = "*";
$AutoClutch = "*";
$Mouse = "*";
$KbNoHelp = "*";
$KbStabilised = "*";
$CustomView = "*";

thank you