Slow motion with xbox controller

I want to change the gear up and gear down buttons to be slow motion on and slow motion off, going from 100% realtime to 5% but have no idea how to do it in input maps or where to find the xbox input map... Can someone help me?

 

Not 100% sure of this will work, but try deleting these two lines from the inputmap (backup originals first),

%mm.bind(%device, btn_a, shiftUp);
%mm.bind(%device, btn_x, shiftDown);

Then paste in these two lines.

%mm.bindVLuaCmd(%device, btn_a, "bullettime.set(100)", "");
%mm.bindVLuaCmd(%device, btn_x, "bullettime.set(6)", "");

Also its worth noting the inputmap probably wont be the one called 'controllerxbox360forwindows.inputmap', which is what i found out yesterday while editing inputmaps for the first time. The one for me was called '02A1045E.inputmap', so its worth checking out for yourself. Find out how here - http://wiki.beamng.com/Playing

 

I found it easier to just use Xpadder and bind "Alt + Left" etc. onto the controller, since the updater overwrites the files every time I start the game.

Only thing is that you have to remember to start the xpadder every time you start the game.

 

Thats the problem, im using a 3rd party controller for PS3 thats being tricked into acting as a xbox controller for pc so xpadder is not working with it and I cant macro any of the keys...