THE WAY THE FUEL & COMPUTER IS TO RUN Its ok to run @ high revs. the way a engine is tuned matters how long it will last.

heh, i've been driving my FD pretty grandma-ish for hte past yr. hardly get boost into the city, and shift @ 3k.. :)

but i do track it every so often, so that's my way of getting rid of carbon deposit.. and so far, no probs w/ the engine :)