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Old 09-11-2010, 07:49 PM   #22 (permalink)
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Originally Posted by 96sentra View Post
why rev match? if I leave the throttle fully open (to minimize BSFC) then the engine will start and go to the right rpm as fast as it can, and then start increasing rpm's as the speed goes from 50mph to 60mph

I guess I don't understand rev matching, can you please explain a little more?

Suppose 5th gear at 50mph corresponds to 2000RPM. If you bring the engine up to 2000RPM before you let out the clutch, you'll have a smooth ride and less wear on parts of your transmission and driveline. You should rev match every time you downshift or shift from N while the car is in motion.