are "italian tuneups" recommended for gas-engined cars, specifically, for my M103-engined 190e2.6?

in the winter (like now), after warming it up sufficiently, i rev the engine higher than usual on my limited 10km drive to the train station, to help clear out any corrosive condensates that may have collected in the exhaust system.

as for preventing carbon buildup, does anyone know from experience how often one has to make that banzai run, and for how long? (i must be looking for an excuse here to do this)