i like the way it sounds, but why not just include with motors if its to improve on there up-design? i mean, for guys who like to run modded motors< hu hmmm> what does this do to the tuning? cant just grab this and throw on a modded motor, as im sure its a game changer,guess the answer is to wait and let the modders get em,GET TO WORK!! and than retune the motors...rc def EVOLVES...lol..that being said, i want one..dammit!