Honestly, the common sense things like using the best fueling solution that is available to you, not trying to make your car a flex fuel vehicle, driving it spiritedly occasionally (in non freezing temps) to keep things clean and checking/changing all of your fluids regularly are all going to help you mitigate excess build-up and/or wear.
The golden key is going to be better fuel delivery to the fuel rails and ultimately the injectors. There are strides to make things better, but the gains that we need are so great that there is no fix. An injector, rail or pump that has 5% better spray, burn patterns or volume just won't cut it. The actual gains is immeasurably small. The volumetric demands of the ECM can hardly be met in aggressive mapping on a normal warm day. Engines definitely perform differently depending on ambient temperature. Air and fuel volumes, densities and temperatures will affect performance. When it gets colder air gets more dense, but fueling does the opposite. As air temps drop you burn more fuel per revolution, are you seeing the trend? The issue that Mike is highlighting is a fuel volume related issue. Density is equal to the mass of the substance divided by the volume of the substance. When you heat gas, it expands, but on the other hand when you subject it to extreme cold it will condense. When it expands, its volume increases. If the volume of a substance increases while the mass stays the same then the density will decrease.
If gas cools, the volume will decrease
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This is what kills the EB platform from a performance POV, to date.
The next generations of the EcoBoost will address several issues that we must deal with now.
