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Old 10-25-2012, 04:17 PM
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JCL JCL is offline
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Join Date: Mar 2005
Location: Vancouver, Canada
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May be more of a problem due to direct injection than with turbochargers, since the fuel detergents don't get to the intake ports.

I have always made sure to get the engine up to temperature, and then use the upper rev ranges every now and then. Used to be called an Italian tune up. I never had a problem with carbon buildup with my 2008, but that is a sample of one.
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