For the most part the computer on the Raptor will only adjust for altitude and air density. Any time you add something to the raptor you should add a programer. you can try the slip on, then keep an eye on your spark plug. If it turns white or your bike starts popping on deceleration then this means your running lean.
What up, i just bought an 08 700r and just put an hmf slip on pipe on it and havent had a problem if u want ill send u a pic of it or whatever. You dont need the programmer or need to change anything unless you are gettin the full system.