OK, so I played around a bit with the manual. If shifted normally or quickly, here is what I observed. In a downshift, the engine revs. In an upshift, the engine does not rev but hangs or "sticks". Again, it would be a poor design to have it rev. That said, I noticed that if the gear shift is put into neutral and let it stay there for more than a second or two, the rpms drop down towards idle speed. Then, whether you select an upshift or downshift, the engine will rev to match the proper speed for the engagement of that gear. No one should be shifting like this i.e. taking more than a second to get into the next gear. That's why I found it odd that anyone would notice engine revving during an upshift.
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"America.... still builds rockets!"
Vette: 355 cid, 400 rwhp
'13 CTS-V Coupe: 6.2L LSA, 556HP
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