No Rev hang when car sits in the sun all day

SDAlexander8

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Steve
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2017 Civic Si Coupe
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Has anyone else noticed that when their Si sits in the sun and cooks all day in 90+ degrees and you fire it up at the end of the day to go home from work, the rev hang is gone and the revs drop quickly for about 10 minutes until it gets to operating temp?
Why does this happen?
 

consensual_induction

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Turbo
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2018 Subaru Sti, 2019 civic Si, Scion Fr-S, Nissan 350z, Mitsubishi Evo X
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Wow. What a discovery and what a succinct answer.

Best thread of the day lol
 

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