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No, in a car that uses high octane fuel and has a modern fuel injection system, the old 'Italian tune-up' really isn't required to burn off carbon build-up. The most cited reasons are: to ensure that the oil gets up to operating temperature at which point it is better able to lubricate engine internals; to burn off water that can build up in the oil when the car is stored, or used solely for short drives; oil pressure increases with RPM's and again, this leads to better lubrication of engine internals (again, assuming the car is properly warmed up); the latter is also considered a factor in improving splash lubrication to the IMS bearing in cases where it has been upgraded with a bearing without seals and grease- e.g., the LN ceramic IMS bearing upgrade.
Brad
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