That's meant to happen, if you downshift into a too low gear, the engine will over rev (the rev limiter can only stop the engine from exceeding the RPM limit under it's own power). The current setup works just fine, apart from the lack of fuel cut (the bounciness) for EFI engines, which will most likely be added later on.
+1 also "rev bouncer" in Live for speed also rev limiter physical not limit engine rotation speed (sic!) sry for bad english
The weight of a 4400 lb car going down a hill can, and will, spin the engine faster than the rev limiter. The rev limiter prevents the engine from exceeding a certain RPM under its own power.
ohhh you're talking about the graphical glitch in the tachometer when that happens? I see. Yes, this needs a fix. +1