I drive me Zetec hard as hell, at, or over the redline most of the time, i think im maybe too brutal to the poor thing... Im often surprised at how far over the redline it will go since i dont have a chip or anything..... and i have several times hit the top speed limiter, once during a race, luckily the guy was stuck behind me, or my 110 top speed would have left me way behind him.... blah