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[thstone]

Originally Posted by mgfranz

There is no special computer needed to see the over-rev count, it's already built into the ECU. I forget the process, but a quick search will find it, and don't worry about that count, the rev-limiter does its job just fine. Last time I checked mine it was ar something like 7000 IIRC

Just a reminder - the rev limiter does not always protect against over-revs (particularly on downshifts).

For example, during a 4-2 downshift (where the driver skips 3rd and goes straight to 2nd) if the driver engages 2nd at too high of a speed, then the engine could mechanically over-rev.

The same is true for a missed shift where the driver intended to shift up from 2nd to 3rd but instead went into 1st.

On the racetrack, I've seen over 8K rpm on a poorly executed 5-2 downshift when I let out the clutch just a tad too early at AutoClub Speedway coming off the NSACAR banking at 140mph and braking hard for the 50mph Turn 3 into the infield. Ooops!