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Rev limiter won't really help you if you downshift into too low a gear. At that point the wheels>driveshaft>tranny>engine are mechanically going to force the engine RPMs to whatever they would mathematically be.
And I've never heard of a BCM that stores endless amounts of continuous driving data. I've only heard of the OBD system, which takes snapshots/freeze frame of data when an error code is set, and the airbag data recording system which records maybe 5 seconds of data just before airbag deployment. If GM can just plug a Tech II in and read your top speed or peak RPM ever reached, then that's new to the Camaro.
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