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I just installed the Vitesse throttle controller on my 2008 and what a difference, but that is a whole different story👍.
I noticed that when the vehicle is sitting still and you Rev the engine the controller displaying the controller setting begins to display various numbers, ie. S20, s25, s15 etc. as the RPMs change so does the numbers on the digital display.
Almost a year later, I still love mine. I used it on 6 for a long time but recently changed to 7. Nice to be able to make little small changes to suit your tastes.