Unless you've been running something longer than a 20 minute DE session your DCT shouldn't overheat. How many shifts are you doing per lap? I've never had a heat issue in 100 degree temps but you do have to manage the car. You can't keep the tach pinned at the redline the entire time.
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2018 F30 320iX Melbourne Red
2011 E90 M3 Monte Carlo Blue
2004 E46 M3 Imola Red
2000 E36/7 Z3 Steel Blue
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