Originally Posted by SamS
Well you'll can't have Increased Top Speed Limiter (840) without summer tires. And it is well known fact that Sport Line and M-sport cars have an extra cooler on the driver's side lower intake (where fog light would be) when they have summer tires. So the logical conclusion to be drawn is that option code 840 for Increased Top Speed Limiter adds the extra cooler.
All f30s have the cooler, it's a myth that it only comes with sportline or m-sport.