More likely just a hot day and heightened gauge awareness after the retrofit. IMS bearings and coolant temps are not closely related. I suppose if someone jammed the bearing in sideways and it was binding you *might* notice a temp difference. Pretty unlikely. These cars can heat soak easily when temps are over 100F.
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2009 Cayman 2.9L PDK (with a few tweaks)
PCA-GPX Chief Driving Instructor-Ret.
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