The dreaded metallic popcorn noise..
I was at a friend's place getting my motor mounts (in my NX2000) replaced when a guy had his Civic dropped off. He had put in an aftermarket ECU with no rev limiter and I guess didn't know what "valve float" was. His buddy said he was up around 9,000rpm when BanabBAnngBAGNGnbaNbgNAbgnMNABbBAnng..
When my buddy took the head off you could see the pins/rods THROUGH the top of two of the pistons..
Rev limiters are a good idea, they won't save you entirely from a miss-shift, but the fuel cut probably makes it more likely you'll survive..
I misshifted my poor silvia a couple nights ago, meant for 4th put it in 2nd, thankfully I wasn't too high in the revs, and I think I need ot adjust my clutch because with my foot on the floor it was still engaged, had to pull the gear out..Engine survived, hooray for high redlines
