Just curious if anyone knows much about these. I also found them on jegs, but I don't know if they are shipping yet. Im trying to figure out if its on a switch or how it can tell to switch to the second rev limiter. If it senses momentum, or when the clutch is released? Im just wondering if it would somehow affect doing burnouts while using line lock.

http://www.msdignition.com/new_products/8734.html