The "heat shield" is nothing more than a section of foil. Also the shield lines up with the top of the aircleaner. Being it that the turbo is under the aircleaner, you would think that would be a sufficent shielding.

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1999 MB SL500 (110,000 mi)
2004 Volvo V70 2.5T (220,000 mi)
2014 Tesla Model S 85 (136,000 mi)
MBCA member