Possibly, to speed up scales my teacher always tells me something like: you must become friends with your metronome, lol, and keep in mind, to play fast you must practise playing fast, playing slow won't help! Playing Slow only helps with eveness etc.
EVEN- To practise eveness you play the scale hands seperate and hands together with different rhythms, long, short long, short (quaver, semiquaver, quaver semiquaver etc. -accent the long note) or short shrot short long (tri-pl-et semiquavers then quaver again accenting the long note) etc. then swap the rhyms around,eg-: long short instead of short long, then you will be accenting a different note with a different finger, then play the scale normally accenting ever four notes. This is the way my teacher shows me to play more even and it helps me.
SPEED- My teacher says when you have it perfectly even with no unwanted accents you can play it slow with the metronome, as someone said before and speed it up every so often a couple of beats, if your speeding scales up do hands separate eg if you want to get hands together scales up to 4 note sper beat at 132 or even 150 you have to be able to be able to play scales faster hands sep. 220 sep. 150 tog.
Also try playing stacatto (could help), and if you are playing a scale ascending, bottom to top try playing it the other way going down. Remember mind games

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this rhythm stuff and speed stuff is for anything not just scales.!