View On WordPress. Two months ago, on July 1st, Yahama turned The guys at SpeedTek composed the exact amount of engine revs needed for the cc 4-cylinder engine to reproduce every note of the song: to move from one note to another, electronics wizards use the quickshifter, while the throttle control has been transformed into the guitar strings and the exhaust pipes into four amplifiers. Unlike the rest of us, this particular creature gets also faster and more powerful through the years.