click on this link & scroll down past all the charts to where it talks about throttle response & throttle calibration. some people say it works, others say hogwash, can't hurt to try. i do know 1st hand that the preadator tunes will cut the lag time significantly but that costs $$$.
http://www.lxforums.com/board/f331/tips-tricks-our-lxs-222475/