it will give you gains for sure.. when you put on an aftermarked intake and exhaust ( or even taking out your sparky) your going to need to add more fuel.. or you will be running lean, and damaging you engine... the pc will give you full control of the fuel curves.. totally adjustable.. and if your interested in the pc the best place and cheapest is Fuel Moto USA $259 shipped. thats where i got mine.. they will even put a map on it with your mods... but one thing to consider is that if you really don't plan on going into the motor you will be fine with a dobeck controller.. such as an hmf etc... to completely dial in a pc it should but installed on your bike then adjusted on a dyno.. you can get in the ball park with other peoples maps but never right on.. got to remember every bike is different..