Car Speed Modifier

dir = 0
gs = game.GetService
gs(game,"RunService").Heartbeat:connect(function()
   for i,v in next,workspace.Vehicles:children() do
       if v.Name ~= "Heli" then
           if v:FindFirstChild("Engine") then
               local bf,cf = v.Engine:FindFirstChild("NewForce"),v:GetPrimaryPartCFrame().lookVector
               if not bf then
                   bf = v.Engine:FindFirstChild("BodyForce") or v.Engine:FindFirstChild("VectorForce")
                   if bf then
                       bf = bf:()
                       bf.Parent = v.Engine
                       bf.Name = 
                   
               
                bf 
                    fa = 
                    v.Name:():()  fa =   v.Name:():()  fa =  
                    v.Seat.PlayerName.Value ~= :().LocalPlayer.Name  fa =  
                   bf.Force = .(cf.X**dir*fa,,cf.Z**dir*fa)
               
           
      
   
)
val = {
{.KeyCode.W,};
{.KeyCode.S,-};
}
uis = (,)
chk = (k)
    i,v  ,val 
        v[]==k.KeyCode 
            v[]
       
   

uis.InputBegan:((k)
dir = (k)  dir
)
uis.InputEnded:((k)
    (k) == dir 
       dir = 
   
)