Cold Idle
 

I have an 87 260E (4sale btw) and i noticed that when its cold it dosnt idle at a higher rpm like all of the other cars i have ever driven. also when its warm somtimes it dosnt start right up, when it does finally start it kinda feels like its getting tomuch gas and then it evens out. it has a new fuel relay and fuel filter bout 15k miles ago.

cleaning the throttle body works wonders!
pour some techron into your tank, pedal to the
metal and see what happens.