Tricey27:
Does anyone know a good place for me to look at setting up a "if" function.
Apart from the silly answer "somewhere in your program" that question is impossible to answer without seeing your program code.
And please use the code button </>so your code looks like thisand is easy to copy to a text editor
Is it your intention just to use the Arduino to manage the engine during a normal foot-operated shift?
I wonder if turning the engine off completely is the proper solution? I have never ridden a bike but in a car one just adjusts the throttle during a shift first to reduce the loading on the gears while they move into neutral and then to match the engine speed to the speed required by the new gear position so that they mesh cleanly.
...R