Are there maximum values for the settings? I don't need the multiplier max or minimum values but everything else will help me.  I tried using -1  on forward force to see if I could get the max that way but I had the car slowly reverse instead.  I assume steering angle is up to 360 and the min are 1 or negative number?      

Set multiplier to 1 then it will not change max, and default steering angle is actually default so just dont change it.