I just purchased a Power Commander PC 3 for my 600 F4i and am waiting for it to come in the mail.

What kind of a difference should I expect? Horsepower, torque? The CBR 600 2003 is around 110 to 112 stock?

 

you will notice that your throttle is a ton more touchy which is nice you get the power as soon as you twist your wrist where as before i could notice just a little lag.... um you can feel the extra power but idk what the actual gains are

 

it all depends on your other mods

 

I haven't done many other performance upgrades besides K&N air filter and a 2 Bros slip on.