Just find the original cvar.speed>1 in client.cpp (it should be commented out) and replace it with this code 
register the cvars 
Code: 

   if ( cvar.speed>1 ) 
   { 
      extern DWORD speed_ticks_left; 
      extern DWORD phase_ticks_left; 

      int speedbar_x = displayCenterX*2 - 100; 
      int speedbar_y = displayCenterY*2 - 195; 
      ColorEntry* clr=colorList.get(13); 
       
      if(cvar.speedoff == 0 ) 
      { 
         DrawHudString(cvar.speedbar_x-11,cvar.speedbar_y, 0, 0, 0, "SpeeD: NoLimiT"); 
      } 
      else 
      { 
         if(speed_ticks_left) DrawHudString(cvar.speedbar_x,cvar.speedbar_y   ,clr->r,clr->g,clr->b, "speed: %d",speed_ticks_left ); 
         else                 DrawHudString(cvar.speedbar_x,cvar.speedbar_y-20,clr->r,clr->g,clr->b, "wait.. %d",phase_ticks_left ); 
      } 
      if(cvar.speedbar == 1) 
      { 
         gEngfuncs.pfnFillRGBA(cvar.speedbar_x,cvar.speedbar_y,100,20,30,30,30,12);//background 
         if(speed_ticks_left) 
         { 
            gEngfuncs.pfnFillRGBA(cvar.speedbar_x,cvar.speedbar_y,speed_ticks_left/(cvar.speedon/100),20,255,0,0,255); 
         } 
         else 
         { 
            gEngfuncs.pfnFillRGBA(cvar.speedbar_x,cvar.speedbar_y,phase_ticks_left/(cvar.speedoff/100),20,255,50,0,255); 
         } 

         if(speed_ticks_left) 
         { 
            DrawHudString(cvar.speedbar_x,cvar.speedbar_y,clr->r,clr->g,clr->b, "speed: %d",speed_ticks_left ); 
         } 
         else 
         { 
            DrawHudString(cvar.speedbar_x,cvar.speedbar_y-20,clr->r,clr->g,clr->b, "wait.. %d",phase_ticks_left ); 
         } 
      } 

   } 
}