Synchronized down shift rev-matching system
Encyclopedia
Synchronized down shift rev-matching system (SynchroRev Match) is a technology invented by Nissan for use on manual transmissions. The technology was first used on the Nissan 370Z
Nissan 370Z
The Nissan 370Z is a sports car manufactured by Nissan Motors. It was announced on October 29, 2008 and was first shown at an event in Los Angeles ahead of the 2008 Greater LA Auto Show, before being officially unveiled at the show itself...

. In combination with the engines ECU and various sensors the engine blips the throttle for the driver during both downshifts and upshifts to allow for better and smoother shifting, and improved handling.
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