alright , what battery do u have crammed in there? and have u checked the current?
have u flown it on 3's? is it noticeably faster on 4's?
i have the same setup on 3's and its over 30 amps, IF the battery can keep up it has to be close to 50amps. mine , w/ thinned trailing edges on all surfaces, mine is over 100 mph , but i dont see them going much faster because of wing thickness.could be wrong though